Macbeth A Good Man Essays - Characters In Macbeth,

Macbeth: A Good Man A struggle is present in every tragedy, as a person tries to overcome their flaws and fit the mold of their ideal. William Shakespeare plainly defined a good man in the play "Macbeth". This goal by it's definition is a difficult one for any man to achieve. Prudence and logic, temperance and patients, as well as the vindication of honor are Shakespeare's defining characteristics of a good man. As with any well written tragedy, Macbeth's title character and hero had to fall from his place of greatness to see his faults and begin his agonizing climb back to his previous position. His position, that of a good man, was one that demanded respect in the beginning of "Macbeth". The Sergeant described Macbeth's honor and bravery to king Duncan in act I, scene 2. "For brave Macbeth_well he deserves that name_ Disdaining fortune, with his brandish'd steel, Which smoked with bloody execution, Like valour's minion carved out his passage Till he faced the slave;_" Macbeth defended his king's honor as well as his own, as Shakespeare showed a good man never backed down from a foe. In the later acts of the play, Shakespeare furthered the definition of a good man by portraying what a bad one was not. In Macbeth's darkest hours, he showed no sign of prudence and logic as he slayed king Duncan, and hired assassins to murder his friend Banquo. Macbeth displayed his temerity in act IV scene 1 saying, "_from this moment The very firstlings of my heart shall be The firstlings of my hand. And even now, To crown my thoughts with acts, be it thought and done;_" Macbeth was no longer the logical, thinking man whom many admired. He had become reckless, acting with only his passion and not his mind. The tragedy of the murders he brought on fair Scotland was a direct result of this violation of the criterion of a good man. The most apparent flaw, and perhaps the most tragic in Macbeth's character, is his lack of patients and temperance. These shortcomings haunted Macbeth, causing him to let his "overvaulting ambition" rush fate, and hasten his doom. Macbeth could not wait for an appointment to a position of more power. Instead, he murdered the king to take his place. Opting not to wait to see if Banquo would be loyal to him, Macbeth had his companion murdered. His impatience led Macbeth to listen to his wife, the witches, and his darker side. He again informed people what a good man was not. In the end, Macbeth did regain a shred of his previous distinction when he faced his adversaries like a true warrior. Macbeth's last words are those of a good man who faces his own problems. To Macduff he shouts his last words, "Before my bodyI throw my warlike shield. Lay on, Macduff,And damn'd be him that first cries, `Hold, enough!" Like a bear, Macbeth regains his seat of honor, and becomes in his last breath, a good man.

Free Essays on The Advantage Of Stupidity

The Advantages of Stupidity Most people say being stupid will lead no where. They claim that it is the worst possible condition in which to spend one's life, and if possible, it should be completely avoided. They would even suggest if the symptoms of stupidity are caught in the early stages, it could easily be treated by a surgeon. The most effective method used to do this is the chainsaw technique, later described in volume two. Yet, perhaps if people took a closer look at some of the advantages stupidity had to offer, they wouldn't have such a negative attitude toward it. After reading this paper, one will understand the advantages of stupidity. Admittedly, stupidity has certain disadvantages. Life isn't a bowl of cherries. And being stupid doesn't make it any fruitier. Being stupid can annoy even the most sensitive people. If one acts stupid, and does it in the wrong crowd, like a group of adults, it will seem more immature than funny. If one is forced to act stupid while dealing with lower life forms, for example, high school teachers, one may encounter barriers such as cruelty and insensitivity, with the utterance of statements like, "Think with your head straight!" or, "You have a brain, use it." Yet these are all true, there are still many advantages to stupidity. The first advantage is very easy to understand. Stupid people are never asked to do a lot. Many have noticed that people tend to steer away from someone they feel may be stupid. This is for a very good reason. The stupidity which they posses makes a name for themselves, a name which can be very difficult to shake. Possibly, it is a word which describes the working habits of the person, such as "crappy". Yet, this creates a positive situation for the stupid person. They will have a lot of free time on their hands for more of lifes truly meaningful pleasures. Some of these ac... Free Essays on The Advantage Of Stupidity Free Essays on The Advantage Of Stupidity The Advantages of Stupidity Most people say being stupid will lead no where. They claim that it is the worst possible condition in which to spend one's life, and if possible, it should be completely avoided. They would even suggest if the symptoms of stupidity are caught in the early stages, it could easily be treated by a surgeon. The most effective method used to do this is the chainsaw technique, later described in volume two. Yet, perhaps if people took a closer look at some of the advantages stupidity had to offer, they wouldn't have such a negative attitude toward it. After reading this paper, one will understand the advantages of stupidity. Admittedly, stupidity has certain disadvantages. Life isn't a bowl of cherries. And being stupid doesn't make it any fruitier. Being stupid can annoy even the most sensitive people. If one acts stupid, and does it in the wrong crowd, like a group of adults, it will seem more immature than funny. If one is forced to act stupid while dealing with lower life forms, for example, high school teachers, one may encounter barriers such as cruelty and insensitivity, with the utterance of statements like, "Think with your head straight!" or, "You have a brain, use it." Yet these are all true, there are still many advantages to stupidity. The first advantage is very easy to understand. Stupid people are never asked to do a lot. Many have noticed that people tend to steer away from someone they feel may be stupid. This is for a very good reason. The stupidity which they posses makes a name for themselves, a name which can be very difficult to shake. Possibly, it is a word which describes the working habits of the person, such as "crappy". Yet, this creates a positive situation for the stupid person. They will have a lot of free time on their hands for more of lifes truly meaningful pleasures. Some of these ac...

Guide to Past Simple and Past Continuous Verb Tenses

Guide to Past Simple and Past Continuous Verb Tenses There are two principal past tenses used to make general statements about the past: The past simple and the past continuous. The two tenses are quite different. Use the past simple to talk about an event which happened at some point in time in the past. Tom flew to Chicago last week.Peter visited his friends in Florida two months ago. If you are a teacher, use this guide on how to teach the past simple tense for more help. The past continuous is usually used to refer to events happening at the same time that something important happened in the past. They were doing their homework when she arrived.Jack was studying while Dave was cooking dinner. The past continuous is also used to express what was happening at a precise moment in the past. I was attending a lecture at 2.30 yesterday afternoon.Alice was reading a book at six yesterday evening. If you are a teacher, use this guide on how to teach the past continuous tense for more help. Past Simple Structure Positive Subject Verb ed OR Irregular Past Form Objects I, You, He, She, We, They played golf yesterday afternoon.I, You, He, She, We, They went lunch at noon. Negative Subject did not (didnt) Verb Objects I, You, He, She, We, They didnt go on vacation last summer. Subject did not (doesnt) Verb Objects Questions (Why, What, etc.) did Subject Verb Objects? Did I, you, we, they attend the meeting last week? Past Continuous Structure Positive Subject conjugate the helping verb be verb -ing. I was, You were, He was, She was, We were, You were, They were watching TV when I arrived. Negative Subject conjugate the helping verb be not verb -ing. I wasnt, You werent, He wasnt, She wasnt, We werent, You werent, They werent working when he came into the room. Questions Question word conjugate the helping verb be subject verb -ing What were you, they doing at seven oclock?What was I, he, she doing at seven oclock? More Guides for Past Simple These guides were prepared especially for beginners and include dialogues and a short quiz. Past simple with the verb to be for beginnersPast simple with regular and irregular verbs for beginners Teach a Lesson About the Past Simple and Past Continuous Here are lessons on the site which focus on the past simple or past continuous and their use with other tenses.Then - Now - integration lesson for upper-level students.Time Expressions - past simple and present perfect compared and contrasted.Integrating Past Continuous - integrating past continuous into writing.Guilty! - communication lesson using a variety of past tenses. Activities With the Past Simple and Past Continuous Some activities that will help you practice: What Were You Doing? - Use of the past continuous in combination with the past simple.A Holiday in Italy - Describing a past holiday.Time Expressions and Tenses.

Corn farmers Essay Example | Topics and Well Written Essays - 500 words

Corn farmers - Essay Example As per the law of demand and supply of economics, lesser demand of corn will push the price of corn down ward to an extent so that equilibrium in demand and supply reaches. Individual corn farmers will thus face the state of lesser demands then previously what they had catered to. The market of corn can be assumed as perfectly competitive for the following reasons. 1. There are large producers and suppliers of corn in the market. It means that each producer is too small compared to the entire market to influence price by its own supply. 2. Corn Market has bountiful suppliers with standardized products. Buyers perceive them all identical. 3. Buyers have perfect information available about the prices of corn producers. 4. There are no entry or exit barriers for the firms in the long run; market is always open for competition for new suppliers. 5. The market is said to have reached in long run equilibrium by 2014 and in a perfectly competitive state as the marginal firm makes a normal p rofit in the long run. Since market of corn is nearly perfectly competitive, any reduction in demand or increase in its supply will push the price down ward so as to find a new equilibrium of demand and supply during 2016 and beyond. (Kindly refer Appendix I) Above happening is bounded by certain assumptions, which are enumerated as per the following. a.

Strategic Management Essay Example | Topics and Well Written Essays - 2000 words - 1

Strategic Management - Essay Example Apart from being the most successful retail stores globally, it has been a model among many top-level companies. Walmart has consolidated a significant part of the market share, and has a wide business that offers a significant extent of business to suppliers and manufacturers giving the company an edge over suppliers (Vance & Roy 1994). The retail store has overcome turbulent periods beating the competitive chain-store market since its inception by sticking to its mission, vision, objectives and goals (See Appendix: Figure 6). Nevertheless, its competitiveness is has been threatened by the emerging e-commerce resellers such as Amazon (Wohlsen 2013) On the other hand, Age UK operates in a conspicuously competitive market namely financial, retail markets and conventional fundraising. The current uncertain economic climate in the UK has affected the company’s financial position due to decreased funding from the government (See Appendix: Figure 6). This has prompted it to focus m ore on the high donations that is attributable to the increasingly high pressure on the aging population and the local partners (Bowman & Faulkner 1997). The paper concludes that even as Wal-Mart and Age UK are both enterprises with almost similar strategies, they are confronted by different challenges that have prompted them to diversify their strategies to maintain their market share, extend geographical frontier through acquisitions and organic growths (Age UK 2011). Faced by the imminent threat from online retail stores, Wal-Mart, which is unceasingly in pursuit of horizontal, vertical and geographical expansion by pushing for technology applications as an integral part of its strategy. The company has trampled on its competitors through its supremacy in inventory management and supply-chain logistics. Age UK on the other hand hopes to expand geographically through venturing further to cover disasters. Additionally, even as Age UK has launched a new radio station and increased f inancial services offerings to its customers, Wal-Mart anticipates its online strategy to contribute further to the bottom line (Wohlsen 2013). This paper recommends that if Wal-Mart has to keep up with the viciously competitive reselling industry, it must pay its workers well to avert the prevalent strikes to restore its public image, it should also leverage on its financial background to increase global presence. It should also branch out to new sectors including pharmacies, warehousing, automotive repair and grocery sale. Additionally, it should take an innovative approach in reselling and venture further into online retailing. Conversely, Age UK should invest in expanding its direct and financial services to support retain fundraising. It should also improve its information dissemination from its partners into their CRM system (Age UK 2011). Walmart’s Strategic Positioning Strategic positioning includes showing an organisation’s current positions in the marketplace . This helps understand the approaches both organisations have adopted (Hitt et al 2007). Walmart is the world’s largest retailer, one of the biggest corporations as well as the largest employer. The company has unique business models that are accustomed to the

Communication Skills in Social Work | Essay

Communication Skills in Social Work | Essay In the context of Social Work practice learning  (Childrens Services Assessment Team)  and the social work role discuss a particular piece of  practice, giving consideration to the skills and models of communication and empowerment that were used. Introduction Organized under the United Kingdom’s Department of Health, Children’s Services represents a division of Social Care which is administered in each region under the auspices of the Children’s Commissioner (Children Act 2004). Children’s Services is committed to the safeguarding and rights of children through high quality services over a broad array of provisions. The Children’s Assessment Team under the Department of Health has the responsibility for the handling of children and their families who have benne either referred and or have contacted their respective Child Care agency (London Borough of Barking Dagenham, 2006). The preceding includes the offering of advice and help while ensuring that the correct decisions are rendered with regard to the urgency dictated by the circumstances along with the proper response level. The preceding represents an ‘assessment’ as carried out in each individual circumstance, which requires skills, communication and the powers to carried the aforementioned out. This examination shall look into a particular area of practice concerning Social Work in the Children’s Services Assessment Team, giving consideration to the skills, models of communication and empowerment involved. The Referral and Assessment aspect of Children’s Services represents one of the most important areas of the many services offered by this Department in that it is responsible for acting upon referrals concerning children and their families that are in need of assessment (Southwark Council, 2006). The Referral and Assessment Team provides intervention as well as support and is responsible for the initial intake process covering the assessment of need and urgency, prioritizing said cases on an individual basis (Barnett London Borough, 2006). One of the most important areas, which includes child protection, legal proceedings and that children in need are looked after, is the initial process which identifies a child in need as opposed to child protection (Wrexham County Borough, 2001). The manner in which the referral was initiated has a bearing upon the type of skill, communication and application of techniques involved. In this instance, this examination shall utilize the exampl e of an abused child that has been brought to the attention of Child Services through calls made by a concerned citizen, or other means. The data and information gathered in the initial contact, regarding the allegation, requires immediate follow up to assess the truthfulness of the allegation and thus whether further action is warranted (Barnett London Borough, 2006). Said referral can come from a number of sources, such as neighbors, teachers, school nurse, and other sources (Barnett London Borough, 2006). Once the process has been initiated the most important aspect entails the skills, and communication techniques employed. The core mission of all social work is the promotion of social justice through its practice (Healy, 1998, pp. 897-914). Within this framework, social workers are in a system that promotes collaborative approaches representing analysis and prioritization (Healy and Mulholland, 1998, pp. 3-27). Once the decision has been made to see the child in question, as a result of either the suspicion or proof regarding action being warranted, the skills in communication as well as observation come into play. Thompson (2003, pp. 10) advises that the importance of communication is that it permits us to transmit information from one person to another and it represents â€Å"†¦ a complex, multilevel event†. In communicating with children as well as adults, social workers need to be well versed in interaction that accompanies communication and contact, and the complexities entailed, as well as the messages on a verbal and non verbal plane (Thompson, 2003. pp. 10-12, 33 – 34, 182-18 3). In those instances where there is an absence of external physical evidence or medical examination, the social worker has to be able to ascertain from conversations and observations with the child as well as the adults involved regarding tone of voice, eye movements, reactions, and other behavior whether truthful replies are being given. The preceding represents areas that encompass theory as well as practice. Adams et al (1998, pp. 253-272) state that the context of social work has changed over the past twenty years as a result of new public management systems that have decreased the value of theory along with the value driven aspects involved in human social work. In the context of children’s services the Referral and Assessment Team intercede on behalf of the child through policy decisions and active support when the initial interview uncovers need, depending upon the circumstances. This aspect represents item number six under Article Two, General Function, of the Children Act 2004 (Children Act 2004). The Department of Health (2006) provides for advocacy safeguards for children to protect them from abuse as well as poor practice. This aspect provides for children themselves to be a part of the process, having and active voice that can be and is heard to participate in reaching determinations (Department of Health, 2006). Under provisions as set forth, the standards and core principles that children can expect are identified as (Department of Health, 2006): The role of children in advocacy, policy context, equal opportunities, confidentiality, publicity, accessibility, independence, complaints, procedures, and the management and governance of services The preceding along with empowerment provides the child with a real voice as well as organization that is committed to ensure their well being as found under the Children’s Services Regulations 2005 of the Children Act 2004 (Children’s Services Inspection Regulations, 2005). Through a formalized inspection, review and analysis process involving â€Å"†¦ two or more inspectorates and commissions, the process is ensured of impartiality as well as adequate oversight. Articles 2.3 under this provision sets forth â€Å"†¦ that relevant assessments, inspections, reviews, investigations and studies †¦ are conducted on cases. These measures are a part of the framework of checks and balances incorporated into the process for the safeguarding of the child who comes to the attention of Children’s Services. Empowerment also provides for the offering of assistance, counseling and advice to parents in need of help in order to safeguard a child’s well be ing. The formalized process sets forth specific guidelines in all of the indicated areas, as well as a broader scope for a matter of such national importance. Conclusion Owing to the sensitive nature of services involving children, specific case studies or references to such are not available, for the obvious reasons. Under the context of the Referral and Assessment Team of social work, a hypothetical example was used as the broad framework for the examination of practice learning and the social work role with consideration given to the skills and models of communication and empowerment. The Children Act 2004 and the Children’s Services Inspection Regulations, 2005 set forth specific procedures, guidelines and framework for the handling of child cases providing oversight safeguards through redundancy features. Each regional Council works in partnership with the departments of Education and Health, as well as other social work teams to â€Å"†¦ ensure the co-ordination of assessment of needs †¦Ã¢â‚¬  leading to the â€Å"†¦ formulation of individual care plans and support packages† (Beacon Council, 2006). The process of referral and assessment is conducted under procedures that are of course subject to the individual expertise levels of the interviewers and case workers. However the safeguards of a multi-level internal review and follow up process catches any potential instances whereby a child might slip through the system due to any number of reasons. As is the case with any process involving humans and organizations, there are those occasions when the system or the person fails, however, given the multi level review and follow up process, such mistakes do not last too long. Bibliography Adams, R., Dominelli, L., Payne, M. (1998) Social Work: Themes, Issues and Critical Debates. Houndsmills Macmillan Barnett London Borough (2006) Supporting Families Division. Retrieved on 10 December 2006 from http://www.barnet.gov.uk/index/health-social-care/children-and-family-care/supporting-families-division.htm Beacon Council (2006) Children and Families. Retrieved on 12 December 2006 from http://www.bexley.gov.uk/service/social/childrenandfamilies/disabilities.html Children Act (2004) Children Act 2004. Retrieved on 10 December 2006 from http://www.opsi.gov.uk/acts/acts2004/40031b.htm#1 Children’s Services Inspection Regulations (2005) Children’s Services Inspection Regulations. Retrieved on 12 December 2006 from http://66.218.69.11/search/cache?p=uk+children%27s+services+assessment+teamfr=yfp-t-501toggle=1ei=UTF-8u=www.dfes.gov.uk/consultations/downloadableDocs/Childrens%20Services%20Inspection%20Regulations%20Consultation%20Document%20-%20PDF.pdfw=uk+childrens+services+assessment+teamd=IY3kv5IFNg0Eicp=1.intl=us Department of Health (2006) Department of Health: Children’s Advocacy. Retrieved on 11 December 2006 from http://www.dh.gov.uk/Consultations/ResponsesToConsultations/ResponsesToConsultationsDocumentSummary/fs/en?CONTENT_ID=4017049chk=vFWybl Healy, K. (1998) Participation and Child Protection: The Importance of Context. Vol. 28. British Journal of Social Work Healy, K., Mulholland, J. 81998) Discourse analysis and activist social work: Investigating practice processes. Vol. 25, Number 3. Journal of Sociology and Social Welfare London Borough of Barking Dagenham (2006) Children’s Services Children’s Assessment Team. Retrieved on 10 December 2006 from London Borough of Barking Dagenham Southwark Council (2006) Children’s Services. Retrieved on 10 December 2006 from http://www.southwark.gov.uk/Uploads/FILE_10982.pdf Thompson, N. (2003) Communication and Language: A Handbook of Theory and Practice. Palgrave Macmillan Wrexham County Borough (2001) Assessment Framework for Children in Need and their families. September 2001. Wrexham Social Services Department, Directorate of Personal Services, Wrexham, United Kingdom Aquatic Plants: Rate Of Photosynthesis Aquatic Plants: Rate Of Photosynthesis Acid rain is a known effect of global warming, which has damaged many aquatic environments and aquatic plants throughout the world. This study investigates the effects of acid rain on an aquatic plants rate of photosynthesis. The research question is How does the change in pH of an elodeas habitat due to acid rain affect the plants rate of photosynthesis? Samples of elodea were placed into two acidic solutions, 0.01 Molar solution of nitric acid and 0.001 Molar solution of nitric acid, in a photosynthometer. The control group is water in the photosynthometer with a pH of 7. Each trial took 24 hours and the experiment was done in a high school chemistry lab near a window ledge, away from direct sunlight. After each 24 hour period, the amount of oxygen released by the plants is measured to determine the rate of photosynthesis. As the environment becomes more acidic, the elodea samples volume of oxygen release decreases. The average volume of oxygen release for the elodea samples in the control water group is 0.57 mL, 0.29 mL for the pH 4.0 group, and 0.15 for the pH 3.5 group. The results from this study suggest that there are big differences among the three groups and that acid rain negatively affects the rate of photosynthesis. 1.0 Introduction 1.1 Rationale of Study Nowadays, global warming has become a big issue on the forefront of environmental problems. Its not simply the devastation of rising temperatures all over the world but other effects as well which can be much more dangerous and harmful to the human race. One of these effects is the increase in the acidity of precipitation, or acid rain. At present, acid rain affects large parts of the United States and is especially noticeable near large cities. The annual acidity value averages at pH 4 but values as low as pH 2.1 have been observed. It is confirmed that the increased use of natural gas and development of factories have been associated with the increasing acidity of precipitation and thus, efforts had been made to rely on more clean, renewable energy sources and the development of air quality emission standards. However, not all the economic and ecological effects due to the introduction of strong acids into the natural systems are known and therefore, this study looks into one of it s many harmful effects, the acidification of freshwater ecosystems. Studies suggest that no matter how small the change in pH of any aquatic ecosystem is, large amounts of magnesium and calcium would still be lost in the vicinity affected by acid rain. As a result of the loss of these vital elements, the response and recovery of any aquatic ecosystem toward the decrease in acid deposition would be delayed significantly. Because of this, any further reduction in pH of the ecosystem will bring about exponential increases in damage to any living organism within the affected area. Just like how damage to the human immune system would lead to significant, exponentially increasing damage to the human body in the form of diseases, the damage done to the recovery mechanisms of an aquatic ecosystem due to acid rain opens up possibilities for catastrophes that could be of a far worse magnitude. One such possible disaster is the harming of aquatic plants rates of photosynthesis. Alongside the endangerment of the population of crustaceans, insects, and fish within the aquatic ecosystem, the damage done to the aquatic plants rates of photosynthesis such as Elodea Canadensiss, can be one of the worst possible effects of acid rain and global warming. This study is worthwhile in that plants are the basis of the food chain and any damage inflicted upon the process of photosynthesis in general would surely mean that our very own existence is in jeopardy. 1.2 Aim The aim of this paper is to study the effects of the change in pH of Elodea Canadensiss environment on the plants rate of photosynthesis. In a broader context, this study investigates the effects of acid rain on aquatic plants. Hence, the research question is: How does the change in pH of an elodeas freshwater habitat due to acid rain affect the plants rate of photosynthesis? The rate of photosynthesis is measured with a photosynthometer in which oxygen released from the elodea samples are collected under differing pH environments. The elodea samples are placed in differing solutions of nitric acid, which are used to simulate elodea living in freshwater habitats affected by acid rain. Because oxygen is a product of photosynthesis and is correlated to the rate of photosynthesis, oxygen is then collected from the various experimental groups. Most experiments that require the measurement of the rate of photosynthesis of a macrophyte determine the changes in oxygen concentration of the system in which the macrophyte is kept in and thus, this study is done in the most popular manner. The volume of oxygen collected from each group would then be analyzed to determine the optimal conditions for an aquatic plant to live in and the effects of acid rain on the rate of photosynthesis. 1.3 Acid Rain Because the value for unpolluted precipitation is officially set at pH 5.65, the same value as distilled water, acid rain is a term that describes rain with a pH of less than 5.6. Man-made emissions of sulfur and nitrogen pollutants had always been blamed as a major cause of acid rain but a genuine cause-effect relationship has never been determined. However, it is certain that sulfur and nitrogen compounds react with the atmosphere to produce acids that would lower the pH of precipitation. There are also many natural sources of these sulfur and nitrogen compounds. For example, approximately 50 percent of atmospheric nitrogen compounds are produced by lightning discharges, which may bring about acid rain. The real importance of studying acid rain though is to study its effects on the natural ecosystems. One such ecosystem that is affected greatly by acid rain is the aquatic ecosystem. The chemical composition of lakes is heavily influenced by precipitation and many studies have suggested that acid rain has caused lake acidification. Most importantly, the changes in pH of these ecosystems due to acid rain appeared to have damaged aquatic plants metabolism, causing a decline in primary productivity. Because these aquatic plant communities are primary producers, any damage done to their metabolism mechanisms (photosynthesis) can drastically reduce the food supply and energy flow within the affected ecosystem. Thus, acid rain has the potential to reduce the supply of minerals and nutrients and endanger the existence of all organisms within an ecosystem, especially aquatic ecosystems. 1.4 Marine Photosynthesis The metabolism of plants is commonly referred to as photosynthesis. Photosynthesis involves two kinds of processes, photochemical and enzymatical, meaning that the rate of photosynthesis is a function of irradiance and enzyme activity. No enzymes are involved in the photochemical process in which the plant absorbs light in the range of 350 and 700 nm in wavelength. In this process, chlorophyll molecules absorb light and excites electrons, which go through the electron transport and end up producing ATP and NADPH. As its name implies, the photochemical process involves light and is purely chemistry. The other process is the light-independent enzymatical process of the Calvin cycle. This process occurs after the light-dependent reaction for it requires the ATP and NADPH to reduce CO2 to carbohydrate. At the start of this process, six carbon dioxide molecules attach to six 5-carbon ribulose biphosphate (RuBP) molecules to create six molecules of a 6-carbon compound. Each of these 6-carbon compounds splits into two 3-carbon molecules called phosphoglycerate (PGA). This results in 12 PGA molecules. Energy from ATP and electrons from NADPH are then needed to reduce each of these PGA molecules into twelve G3P (glyceraldehyde 3-phosphate) molecules. Finally, two of these G3P molecules are used to form one glucose molecule and the remaining ten G3P are reassembled into RuBP molecules. Marine Photosynthesis also requires CO2 to start and this CO2 is acquired when CO2 is dissolved in water. This process is represented by the following formulas: CO2 + H2O ßà   H2CO3 CO2 + OH- ßà   HCO3- The dissolved CO2 in the water can either make the water increase or decrease in pH depending on the pH, temperature, and salinity of the environment. The concentrations of carbonic acid (H2CO3) and bicarbonate (HCO3-) in the aquatic environment form a complex equilibrium, which is needed to sustain optimal living conditions for its inhabitants; the two compounds play a vital biochemical role in the pH buffering system, which strongly affects photosynthetic organisms. 1.5 Elodea Canadensis Elodea Canadensis is an aquatic vascular plant that spends its entire life cycle under the surface of a body of water. It is a perennial with a flexible branches stem and fibrous roots. Its leaves do not have petioles and they are always in groups of three to seven spread out evenly along the entire length of the stem. The species of Elodea Canadensis is commonly known as waterweed and is abundant in North and South America. However, there are 17 species of the genus Elodea and these plants are common throughout the world with use as an aquarium plant. Its use in science experiments is fairly common as well due to its strongly photosynthetic, dense chloroplast structure. When exposed to a strong light source, the oxygen bubbles given off by the plant is clearly visible. Another reason for its use in science experiments is that it is able to live enough after being cut into smaller strands to be experimented on. 2.0 Variables 2.1 Independent Variable The elodea plants are placed in 2 different nitric acid solutions of varying pH and molarity. Strands of elodea with 10 leaves each are subjected to either a 0.001 molar solution of nitric acid with a pH of 4.0 or a .01 molar solution of nitric acid with a pH of 3.5. The solution and elodea are placed into the barrel of the syringe in the photosynthometer. Litmus paper is used to measure the pH of the acid solutions. 2.2 Dependent Variable The rate of photosynthesis of the elodea samples are affected by the varying pH of the solutions they are subjected to. The rate of photosynthesis is indicated by the volume of oxygen given off by each 10 leaf elodea strand and collected in the photosynthometer over a 24 hour experiment period. 2.3 Control Variable The control variable is tap water with a pH of 7.0, a neutral solution, in the photosynthometer. It is used to determine whether or not the acidic solutions the elodea strands are tested in actually have an effect on the plants rates of photosynthesis as compared to a neutral aquatic environment. 2.4 Constants All trials are done in the same chemistry laboratory next to a window ledge, away from direct sunlight. The room and the solutions inside the syringe of the photosynthometer are kept at a constant 26.4 ° Celsius. Each elodea sample is a 10 leaf strand. The same volume of solution is used for every trial in the photosynthometer. 3.0 Procedures 3.1 Preparation before experimentation 3.1.1 Test Trials Before any definite procedure of experimentation is made, test trials needed to be done first in order to see which acid solutions would not kill elodea in a 24 hour period. Strands of elodea are placed in test tubes with 0.001 molar, 0.01 molar, and 0.1 molar nitric acid solutions and are labeled. By the end of the 24 hour period, the elodea in the test tubes with the 0.1 molar nitric acid solution died since the leaves lost all of their green color and oxygen bubbles were not released from the leaves even before the 24 hour period. This meant that the plant could not perform photosynthesis anymore and was dead. The other two elodea samples were alive and thus, the 0.001 molar and 0.01 molar nitric acid solutions were used for experimentation to mimic the effect of acid rain on an aquatic plants rate of photosynthesis. 3.1.2 Nitric Acid Solutions Preparation The 0.01 Molar solution of nitric acid is made by mixing 1 mL of a 1.0 Molar solution of nitric acid with 99 mL of tap water in a graduated cylinder. The tap water is measured with the graduated cylinder and a pipette is used to hold 1 mL of the 1.0 Molar solution of nitric acid. 1 Liter of a 0.001 Molar solution of nitric acid is prepared by mixing 1 mL of a 1.0 Molar solution of nitric acid with 999 mL of tap water in a liter plastic laboratory bottle. 1 Liter of this solution is made since it is more convenient to create a large volume of an acid solution with a low concentration than it is to create a small volume of a highly diluted acid solution. 3.1.3 Apparatus Preparation The photosynthometer is assembled by connecting a syringe to a graduated 1-cm3 pipette with a short length of rubber tubing. The length of the rubber tubing is arbitrary as long as it is tight enough to secure the syringe to the pipette, preventing any liquid from coming out of either the syringe or pipette. The apparatus is fixed in a vertical position with the test tube clamp and ring stand (Figure 1), using the test tube clamp on the syringe and connecting that to the ring stand. 3.2 Method for Experimentation with the Photosynthometer 3.2.1 Application of Elodea Sample and Solutions into the Photosynthometer Before experimentation, a sample of elodea is taken by cutting a strand of elodea with 10 leaves. The mass of the elodea is recorded and measured in order to look for patterns after experimentation. The plunger of the syringe is then removed and the elodea sample is placed into the barrel of the syringe. Since any liquid placed in the syringe with the plunger off will fall straight through and out the apparatus, the elodea sample is placed in the apparatus first before anything. 30 mL of the 0.001 Molar solution of nitric acid is then poured into the barrel of the syringe and the barrel is immediately sealed with the plunger to prevent any more liquid from leaving the apparatus. No matter what, some of the solution would still leave the apparatus with the plunger off. Therefore, 30 mL of the solution is used in the barrel so that any excess amount of the nitric acid solution could be expelled by pushing down on the plunger until 15 mL of the solution is left in the barrel of the syri nge. With the apparatus removed from the test tube clamp and the open end of the pippette pointing upwards, any trapped air inside the syringe and pipette is expelled by slowly and softyly pushing the plunger into the barrel until all of the trapped air expelled, making sure not to have any of the solution leave the pipette. 3.2.2 Maintaining Constants When the apparatus is placed back onto the test tube clamp and ring stand, the temperature of the nitric acid solution inside the barrel of the syringe is measured with an infrared thermometer and recorded. The temperature is measured to make sure that the temperature remains constant for all trials since temperature does affect the rate of photosynthesis. To maintain constant temperatures and weather conditions as well, experimentation is done in one room for all trials and begins at the same time of day. In my case, experimentation was done in the schools chemistry laboratory, which was kept at a constant 26.4 ° Celsius, at 16:00 US central time. 3.2.3 Data Collection The volume (the location of the meniscus) of the nitric acid solution in the pipette of the apparatus is measured and recorded. The time is measured and recorded as well. The elodea sample is left in the apparatus for 24 hours. After that time, the amount of oxygen the sample of elodea gave off is measured and recorded by looking at the location of the meniscus of the acid solution in the pipette. All experimental procedures are then repeated with the 0.01 Molar nitric acid solution and tap water instead of the 0.001 Molar nitric acid solution. Table 4 4.7 ANOVA test The ANOVA (Analysis of Variance) test is also used to further verify the difference of the results among the experimental groups. The result of this ANOVA test indicates whether the experimental variable (pH of the elodeas environment) causes significant difference on the elodeas rates of photosynthesis. Before the ANOVA test could be carried out, three assumptions are made: Observations are independent (the value of one observation is not correlated with the value of another observation). Observations in each group are normally distributed. Homogeneity of variances (the variance of each group is equal to the variance of any other group). The null hypothesis of this test is: there is no difference between the means of the different groups (pH 7.0, 4.0, and 3.5). Then, the statistic test is carried out to find the F ratio. F Ratio = Mean square between groups Mean square within groups If the computed F ratio is greater than the F critical value at the significance level of 0.05, the null hypothesis is rejected. 5.0 Conclusion Graph 1 shows that the mean volumes of oxygen release among all the groups had significant differences. The average volume of oxygen release for the pH 4.0 group is 0.29 mL, which is about half of the mean volume of oygen release for the control group, pH 7.0, of 0.57 mL. The mean volume of oxygen release for the pH 3.5 group is 0.15 which is about half of the mean volume of oxygen release of the pH 4.0 group as well. As shown in Graph 2, this trend is shown to be of an exponential decline in mean volume of oxygen release as pH increases; as the environment becomes more acidic, the mean volume of oxygen release declines more sharply. According to Table 3, the average volume of oxygen release of the pH 4.0 group differs from the control pH 7.0 group by 49%. The average volume of oxygen release for the pH 3.5 group differs from the control pH 7.0 group by 74%. These values are large and again emphasize the significant difference of the results of the experimental groups to those of the control group. According to Table 5, ANOVA test results, there is a significant difference between the mean volumes of oxygen release between the pH 7.0 and pH 4.0 groups, as well as the pH 7.0 and pH 4.0 groups. However, there is no significant difference between the results of the pH 4.0 and pH 3.5 groups. From the ANOVA test results, the hypothesis that the elodeas rate of photosynthesis would be harmed in more acidic environments is supported. A change from an environment of pH 7.0 to pH 4.0 would greatly reduce an elodea plants rate of photosynthesis while a change from an environment of pH 4.0 to pH 3.5 would not bring about a significant reduction in an elodea plants rate of photosynthesis. The standard devation values from table 4 state on average how far the data varies from the mean. For each group, the standard devation is relatively low comparedto the averages of each trial and thus, the data collected and the methods used to collect the data is very precise. Increasing the acidity of an environment results in a number of physical, chemical, and biological changes. A chemical change that could occur is the change in the availability of carbon. With the pH of the environment at slightly acidic levels, the amount of dissolved HCO3- in the water drops. This dissolved HCO3- in the water is the plants source of carbon used for photosynthesis and it is proven that aquatic plants have the best rate of photosynthesis in slightly alkaline environments due to the availability of carbon in the dissolved HCO3-. The lower pH levels in the environment also affect the enzymes in the cells of the plant. If pH levels drop low enough, enzymes such as RuBP used in the Calvin Cycle would shut off and would no longer carry out the chemical reactions needed for photosynthesis. Not only would the acid in the environment kill the enzymes but the acid would also destroy the plant proteins, lipids, and membranes, causing plant cells to malfunction and a major redu ction in the rate of photosynthesis. Specifically, the lowered pH of the environment causes alterations in the chlorophyll molecules, which are highly essential to the process of photosynthesis. 6.0 Evaluation and Suggestions Possible random errors include the inaccuracy of the solution molarity stated, mass stated, and volume of oxygen release stated. These random errors may be caused by the inaccuracy of the measuring equipment. The equipment such as graduated cylinders and pipettes are fairly accurate though to an extent. One possible systematic error could be the different masses of each elodea sample. The mass of each strand may affect the volume of oxygen released for mass may determine the amount of chloroplast in each sample. Since each elodea sample was cut from a larger strand, this cutting may also cut each samples life. With a samples life cut short, the volume of oxygen collected from this experimentation may not truly reflect how plants act outside of these laboratory conditions. Also, the worst source of error in measuring the rate of photosynthesis with a gas collection method may be the gas storage within the leaves. If some oxygen is stored in the leaves, the oxygen collected in the photosynthometer may not fully represent the samples true rates of photosynthesis in the tested environments. Some measures that could be taken to prevent these errors could be to use more accurate equipment and using plant samples of similar mass as well as number of leaves. Total Word Count: 3,002

Disaster Response

The aspect of disaster has been a prevalent attribute within any societal setting. The strength of the society towards this has been provided by various processes modeled as disaster management strategies. Every community has been therefore at a projected risk of effect by various conceptions of disasters. However, the success of any disaster management process is a compliment of various phases. Mitigation is the process of gaining the knowledge about the disaster and developing possible measures of avoiding the risks involved.It therefore involves an assessment of the probable risks which could affect oneself, property of family. It is the compound of both structural as well as non structural processes and measures that are taken towards limiting the impacts held by the disaster (John, 2005). Preparedness is the process whose aim is mainly to prevent the occurrence of the disaster. It compounds the preparation of the procedures and equipments which could be used when the disaster oc curs. Disaster response implies the probable methods of fulfilling and providing the basic and adequate humanitarian needs that are of importance to those affected.It therefore governs the structures of providing assistance and help for the affected persons to undertaken persuasive process in driving out from the crisis. Disaster recovery process comes after the possible immediate threats and effects to people have subsided. It implies restoring the affected property and people to their former state of living by supplying the very essential necessities and creating conditions for a continued life. (John, 2005) In my community, preparedness towards disaster has been a crucial role. Various structures, policies and processes have been constituted to avoid and deal with risks.Various processes have been developed to create possible environments that prevent risks from their occurrence. It has used mass decontamination, emergency evacuation processes, quarantines, developing emergency s tructures for the support of rebuilding and supporting the society after these occurrences above other fundamental measures. At my personal level, I have been obligated in creating moral awareness on the principles and codes of risks mitigations. This is by providing supportive processes that enlighten the society about the possible measures in disaster control (John, 2005).