Friday, October 18, 2019
Should the DREAM Actor legislation like itbe passed Essay
Should the DREAM Actor legislation like itbe passed - Essay Example Every day, immigrants in the United States feel alienated from the society. It may start at an early age or during the teenage year after enrollment to advanced educational institutions. This prevents them from taking part in activities that benefit the society. Immigrants are also denied opportunities which may help build them morally and psychologically. In most cases, immigrants are the best performers in educational institutions. However, they have to go through many hardships so as to afford to pay for their education and also to secure a job in the job market. In turn, this denies them the chances to benefit the society economically. For undocumented children, securing a place in schools and other educational institutions is hard enough. If the manage to enroll to a school, another problem arises in paying their school fees. Sometimes, they may even have to take breaks so as to work. In the worst case scenarios, they even end up dropping out of school completely. However, this is not even half the challenges that they have to go through in their day-to-day lives. For a child to develop psychologically, he/she needs to have a sense of belonging either to a community, a state or a certain social group. Undocumented children are denied this opportunity by being denied certain privileges such as social security numbers and ID cards. This prevents them from taking part in social activities and having fun like other documented teenagers. One of the reasons and explanations, as to why I think the dream act should be passed is because it recognizes undocumented children. The Dream Act gives undocumented children the chance to participate in economic activities and also further their education. As stated previously, many undocumented children are good performers in their studies. However, they end up dropping out of school due to lack of school fees. For example, ââ¬Å"The ââ¬ËInvisiblesââ¬â¢Ã¢â¬ , an article written by Doulas McGray, states ââ¬Å"In 2004,
Thursday, October 17, 2019
Whether the prisoner can be tortured to obtain the information needed Essay
Whether the prisoner can be tortured to obtain the information needed - Essay Example Terrorists are a group of people dedicated to a cause who perform an unconventional act of violence against civilians for political gain. While Prisoners of War can be held without answering any questions except for name, rank and serial number, terrorists are criminals. Terrorists need to be captured and brought to trial. If American troops capture the terrorist, they need to be sent back to American to be tried. If a foreign government or army captures a terrorist, the American government should follow the extradition laws of the foreign government. In the case of the captured number two Al Qaeda terrorist, he should be questioned. If he refuses to talk, this terrorist must be sent to a federal prison to await trial. He should not be tortured, but the terrorist does not necessarily have the rights of an American citizen. That means they can be held in the comfort of a federal prison for an undetermined length of time, until a trial can be arranged. That is not torture. Torture is defined as anything that causes pain to punish or coerce. It would be unethical to withhold medical attention from a terrorist. The use of beating, punching or any other physical means of torture would also be wrong. It is also wrong to withhold food and water from a prisoner. Now psychological torture is different. Loud noises, bright lights, isolating a prisoner or even having the prisoner remain nude is humane. Americans employ these methods against unruly prisoners in America. These psychological methods will not permanently harm a terrorist. So they could be used against the number two Al Qaeda man to find out information. Victims and the victimââ¬â¢s families of 9/11 might disagree with giving a terrorist any rights. If the 9/11 tragedy could have been prevented by torture, some would argue that the means would justify the end. In a perfect world this argument would be true. If American Intelligent was a perfected science, where the military would know
Labour Economics Essay Example | Topics and Well Written Essays - 3000 words
Labour Economics - Essay Example Aside from biological and cultural factors, industrialization has been pointed as the main cause of inequality which started between the agriculture and the industrial sectors. According to Williamson and Lindert (1980), the movements of the skilled and unskilled pay ratios clearly reflect the unequal distribution of wealth particularly between men and women. (Williamson and Lindert, 1980) Industrialization resulted to a lesser demand for human resources. This causes the increase in competition among the workers. The unequal resources such as the access to education between the rich and the less fortunate people resulted to a wider gap on the distribution of wealth between the two sectors of the society. This paper will discuss in details the effects of the inequality in the distribution of earnings, income, and wealth among men and women as a family in comparison to the case of single mothers as well as other factors such as the economic performance of the country and the UK tax reform. These factors could greatly affect the income-leisure time of women. On the other hand, the use of ââ¬ËIncome-Leisure Choice Theory modelââ¬â¢ could give us a better outlook on how working women or single mothers often end up working for longer hours The constantly changing working environment has resulted in the changes of employment patterns among men and women over the past decades. According to OEDC ââ¬â Employment Outlook, the number of women participation in the corporate world has constantly increasing; while the men continuously declining. Specifically, the gender wage gaps between men and women in terms of their median earnings are wide. (See Table I ââ¬â Gender Gap in Median Earnings of Full-time Employees in 2004 below and Graph I ââ¬â Gender Wage Gaps on page 5) Since the earning gaps between men and women are quite big, women especially those who are single
Wednesday, October 16, 2019
Should the DREAM Actor legislation like itbe passed Essay
Should the DREAM Actor legislation like itbe passed - Essay Example Every day, immigrants in the United States feel alienated from the society. It may start at an early age or during the teenage year after enrollment to advanced educational institutions. This prevents them from taking part in activities that benefit the society. Immigrants are also denied opportunities which may help build them morally and psychologically. In most cases, immigrants are the best performers in educational institutions. However, they have to go through many hardships so as to afford to pay for their education and also to secure a job in the job market. In turn, this denies them the chances to benefit the society economically. For undocumented children, securing a place in schools and other educational institutions is hard enough. If the manage to enroll to a school, another problem arises in paying their school fees. Sometimes, they may even have to take breaks so as to work. In the worst case scenarios, they even end up dropping out of school completely. However, this is not even half the challenges that they have to go through in their day-to-day lives. For a child to develop psychologically, he/she needs to have a sense of belonging either to a community, a state or a certain social group. Undocumented children are denied this opportunity by being denied certain privileges such as social security numbers and ID cards. This prevents them from taking part in social activities and having fun like other documented teenagers. One of the reasons and explanations, as to why I think the dream act should be passed is because it recognizes undocumented children. The Dream Act gives undocumented children the chance to participate in economic activities and also further their education. As stated previously, many undocumented children are good performers in their studies. However, they end up dropping out of school due to lack of school fees. For example, ââ¬Å"The ââ¬ËInvisiblesââ¬â¢Ã¢â¬ , an article written by Doulas McGray, states ââ¬Å"In 2004,
Labour Economics Essay Example | Topics and Well Written Essays - 3000 words
Labour Economics - Essay Example Aside from biological and cultural factors, industrialization has been pointed as the main cause of inequality which started between the agriculture and the industrial sectors. According to Williamson and Lindert (1980), the movements of the skilled and unskilled pay ratios clearly reflect the unequal distribution of wealth particularly between men and women. (Williamson and Lindert, 1980) Industrialization resulted to a lesser demand for human resources. This causes the increase in competition among the workers. The unequal resources such as the access to education between the rich and the less fortunate people resulted to a wider gap on the distribution of wealth between the two sectors of the society. This paper will discuss in details the effects of the inequality in the distribution of earnings, income, and wealth among men and women as a family in comparison to the case of single mothers as well as other factors such as the economic performance of the country and the UK tax reform. These factors could greatly affect the income-leisure time of women. On the other hand, the use of ââ¬ËIncome-Leisure Choice Theory modelââ¬â¢ could give us a better outlook on how working women or single mothers often end up working for longer hours The constantly changing working environment has resulted in the changes of employment patterns among men and women over the past decades. According to OEDC ââ¬â Employment Outlook, the number of women participation in the corporate world has constantly increasing; while the men continuously declining. Specifically, the gender wage gaps between men and women in terms of their median earnings are wide. (See Table I ââ¬â Gender Gap in Median Earnings of Full-time Employees in 2004 below and Graph I ââ¬â Gender Wage Gaps on page 5) Since the earning gaps between men and women are quite big, women especially those who are single
Tuesday, October 15, 2019
Gender Ideologies in Local Context Essay Example for Free
Gender Ideologies in Local Context Essay Present essay deals with analysis of gender ideologiesââ¬â¢ functioning in certain local contexts. The latter is discussed through the prism of interactionist approach, which seems to be the most effective in terms of describing micro-level at which gender ideologies function. It provides with possibilities for studying how performative, discourse and social strategies of actors realized in local contexts are embedded in general gender ideology framework. For the present analysis a bar was chosen as the local context, where field study was conducted and gender ideologiesââ¬â¢ reflection in interactions between men and women were analyzed. The central research question of this paper, hence, may be formulated as follows: how do gender ideologies shape interactions between men and women in bar or night club? Gender ideologies in local contexts: interactionist approach. Gender ideologies represent certain social and cultural constructs, which structure the perception of female and masculine identities, societal roles, family status and production relations etc (Philips, 2). Gender ideologies should be understood as a product of social structure, which fosters different roles of men and women in society. For instance, it may be said that currently dominant perception of women in society was formed within predominantly patriarchal discourse. Paradoxically, patriarchal perception of women affects their own gender ideology and identity, which often corresponds with socially constructed identity. Hence, womenââ¬â¢s interactions with men are affected by the absence of their organic self-identity ââ¬â they are forced to interact within the discourse created by men. However, the latter is realized through womenââ¬â¢s own discursive system, which may be described as the micro-level of gender ideology. As Lakoff suggests, women and men learn their distinct languages from the childhood, which being the part of universal language, in fact reflect different identities in gender interactions (Lakoff, 222). Interactions, according to interactionist approach are based on endowing of certain subjective actions of the Other with meaning and symbols (Blumer, 45). In gender interactions, such meaning is ascribed to actions, based on gender ideologies. For instance, as Lakoff suggests of womenââ¬â¢s discourse, ââ¬ËIf she refuses to talk like a lady, she is ridiculed and subjected to criticism as unfeminineââ¬â¢ (Lakoff, 222). The latter example shows that gender ideologies are genuinely embedded in gender interactions, because they form the frame of understanding, actionsââ¬â¢ meaning and behavior. Moreover, as Lakoff suggests, there exist considerable differences between womenââ¬â¢s and menââ¬â¢s use of vocabulary, especially as far as the use of strong words, adjectives and particles are concerned (Lakoff, 223-224). The latter may be evident in any local context, including gender interactions in bar or nightclub, as it would be shown. Any local context activates specific aspects of gender ideology. According to Philips, notwithstanding culture, ââ¬ËThere are at least four aspects of human experience that regularly enter into gender ideologies. These include work, appearance, sexuality and reproductionââ¬â¢ (Philips, 8). There is no denying the importance of the fact, that in the interactionist context, analyzed in this paper, such aspects as sexuality and appearance come into play in the first place. Based on these general theoretic considerations concerning gender ideologies let us analyze their reflection in concrete locationââ¬â¢s context of bar, based on the empirical data collected in the field study. Gender Ideologies in gender interactions in bar Field research for this study was conducted in Dirtbags Bar and Grille in Tucson, AZ on June 1, 2009 during 10:30-Midnight. The data collection orientation focused on observing how gender ideologies affect gender interactions in this situational context. The first observation includes objective behavioral patterns of men and women during their visit to bar. It was established as a fact, that men may arrive to bar both in 3-4 individuals groups and alone. Women, as the field study found never arrive alone, but only with their boyfriend of female friend. The latter situation may be interpreted through the prism of Butlerââ¬â¢s approach to gender identity construction. According to Buttler, identity is constructed based on repetition of certain behavioral patterns, gestures, discourses etc (Butler, 519). The latter implies that social structures, existing in society already provide women with stable behavioral orientations, taught to them by their families, older friends. One of such behavioral codes, which are immediately linked to gender ideology may be described as the cultural taboo for visiting entertainment public places alone. Such taboo is connected first of all with institutionalized male perception of women, being alone in the bar or night club, as the invitation for sexual relations. Based on this perception, visiting bar alone for women automatically means moral fault, since she is immediately associated with prostitute etc. Unlike womenââ¬â¢s case, in menââ¬â¢s gender ideology the problem of manââ¬â¢s visiting bar alone does not exist, since it is not problematized as gender issue at all. Therefore, it is evident that men have more behavioral options and may choose between them to oneââ¬â¢s own like. Buttler suggests that gender identities and ideologies are constructed through theatrical and performative interactions (Buttler, 520). The latter is particular evident in womenââ¬â¢s focus on their dress, while visiting the bar. Women are more prone to put the emphasis on their own clothes and comment on the apparels of their female friends. They often made complements concerning good dress of each other. As the same time, men regularly have no tendency to comment on the clothes of their male friends. Instead, they often make complements to women concerning their dress. The latter observations show that gender ideology functions through performative and theatrical behavior reflected in the culture of dressing. Men are relatively indifferent to what their friends wear, however, pay much attention to what women wear. The performative and theatrical role of gender ideologies is also evident in women and men behavior, when they enter the bar. Women express much more willingness to be noticed by public, including both men and women, as they immediately look for people they know. Unlike, women, men seem to be less tied by any social obligations as they often go straight to the bar and order drinks and only after this greet people they know. Moreover, a bar serves for men a spot to sit down, while women prefer staying near the bar and being attentive to what is going on around them. Gender ideological conventions concerning sexuality are also evident in the types of drinks ordered by men and women. First of all, male gender ideology is obvious in the wide-spread practice of ordering drinks by men for women, especially as the part of acquaintance or showing sexual interest. Such behavior is often welcomed by women, who are embedded in gender ideologies of men, because women are prone to interpret such attention as the marker of sympathy and often use it in their own interest. As far as the type of beverages, drunk by men and women are concerned, men usually do not differentiate between different drinks, while women often order low calorie beverages such as ââ¬Ëdiet coke and Bacardiââ¬â¢ or sugar free redbull. The latter shows that the majority of women are embedded in the discourse relating to their appearance and sexuality, which is according to Philips is one of the central aspects of gender ideology (Philips, 9). Women, embedded in gender ideology, try to follow its main conventions in any local context, including bar. Gender interactions in bar are also characterized by both and men and women behavior directed at emphasizing correspondingly their femininity and masculinity. Men in the conversation with women always try to lower the pitch of their voices, while women often raise it. As Tannen suggests, such strategies are inherently gender, because they are affected by existing ideological representations of femininity and masculinity (Tannen, 169). In these ideological representations masculinity is characterized by the low pitch of voice, which is associated with men authority and womenââ¬â¢s high pitch, associated with her secondary role in society. Gender socialization patterns in bar are also very informative, as far as the reflection of gender ideologies is concerned. Women feel more comfortable always being in company either of their female or male friends. In contrast, men may be either alone or in company without any differentiation. For women being in company guarantees the stability of her identity, because she may fully realize her performative and theatrical patterns of behavior. In contrast, being alone often causes negative gender connotations. Gender interactions in a bar are predominantly initiated by men, when a member of a male group offers a drink to a woman or a group of women. Often women refuse such invitations, however, in a majority of cases they agree even if they feel compelled and uncomfortable in communicating with the large group of men. A man being alone, however, is less prone to initiate conversations with women, than if he finds himself in company. There is no denying the importance of the fact, that the discussed pattern of gender interactions in bar reflects certain features of dominant gender ideologies. As Butler suggests, gender interactions are regulated by social sanctions and taboos (Butler, 520). One of such taboos may be formulated as follows: women are generally not eligible to initiate gender interactions with men; such priority solely belongs to the latter due to their primary role in gender relations. The realization of this taboo is particularly evident in bar context, where women generally behave in such a manner in order to stimulate menââ¬â¢s interest, however, their own interests is hidden from public. A woman may be interested in communicating with a given man, however, due to certain gender limitations she is more likely to refuse from her ambitions. Moreover, men usually feel uncomfortable when gender interactions are initiated by women, because it is usually mocked up in his male company. Hence, it may be postulated that taboos and limitations relating to gender interactions exist both in male and female gender ideologies. If a woman and a man know each other they usually greet by hugs, kisses and even if they are not engaged in romantic relations, they often show some kind of flirting. In personal interactions between men and women gender ideologies are also evident in menââ¬â¢s primary role in initiating tactile closeness with women, especially after alcohol drinks, including closeness, flirt, kisses, hugs, joking etc. Women, interested in such gender interactions, would not hesitate to communicate and flirt. However, a woman, who feels uncomfortable in this situation, according to the field study conducted, tries to use any possibility to escape from such kind of interactions. Gender ideologies are also embedded in the purpose of men and womenââ¬â¢ visiting bars. Men usually visit bars to chase after women and find the object of their sexual desires etc. Women may also visit bars in this purpose, however, their clear intentions are not seen so obviously as that of men, hence, we may speak of dubious nature of their purpose. Such distribution of gender roles clearly resonates with dominant gender ideology, according to which men have the priority in initiating close gender relations. As far as dancing practices in bars are concerned, men are less prone to dance alone; however, women have no qualms about it. Men prefer dancing if they want to initiate interactions with women ââ¬â in such a case they dance close to her. Apart from this, gender interactions in bar are often characterized by age limitations. Older women rarely visit such kind of places; however, older men may be seen there more frequently. Conclusion Gender ideologies represent language reflection of certain social and behavioral patterns of men and women and society. They usually refer to different social roles, types of discourse, sanctions and taboos and behavior of men and women. The analysis of gender ideologies in local context of bar showed that they are reflected in concrete interactions. Men and women usually act according to well-established gender conventions of behavior, which are reflected in initiating interactions, purpose of bar visit, behavior in groups, intersexual behavior etc. Women seem to be considerably affected by their representation in men gender ideologies, which means that they have no behavioral choices. In contrast, menââ¬â¢s behavior is characterized by the possibility of choice between a wide range of options. Men may be either alone or with friends, initiate gender interactions or not etc. Women have virtually no choices: they have refuse from initiating interactions, positively respond to any menââ¬â¢s attempt to initiate communication, always be in a company etc. Moreover, gender interactions in bar reflect crucial social perceptions of women sexuality and appearance, which are the first aspect of gender coming into play in bar context. Women put emphasis on their appearance and clothes and often try to present their identity in performative and theatrical way, which according to Buttler, immediately links such kind of behavior to gender strategies. In contrast men, pay less attention to such things and behave in a more casual and free way. Finally, menââ¬â¢s behavior in a bar is regulated by the lesser number of social sanctions and taboos. References Blumer, Herbert (1969). Symbolic Interactionism: Perspective and Method. Berkeley: University of California Press. Butler, Judith. (1988). ââ¬ËPerformative Acts and Gender Constitution: An Essay in Phenomenology and Feminist Theoryââ¬â¢. Theatre Journal. Vol. 40 # 4, (519-531). Lakoff, Robin. Extract from Language and Womanââ¬â¢s Place. Philips, Susan U. (1999). Gender Ideology, Cross Cultural Aspects. International Encyclopedia of the Social and Behavioral Sciences. Oxford: Elsevier Science Ltd. Tannen, Deborah. ââ¬Å"She is the Bossâ⬠: Women and Authority.
Monday, October 14, 2019
Stratospheric Ozone Depletion Research
Stratospheric Ozone Depletion Research A) Effects of Ozone on the Lower Atmosphere The lower atmosphere (Troposphere) includes 75% by mass of the atmosphere (concentrated). Natural sources of Ozone in the troposphere includes lightning. Approximately 10% of all atmospheric ozone is present in the troposphere. If ozone levels reach 20ppm, they are very poisonous to humans, animals and plants. It oxidises organic tissue which disrupts the normal biochemical reactions in the body, irritates the eyes and causes breathing difficulties. It can be detrimental to plants and agriculture, as it oxidises much more readily then oxygen, killing/spoiling the agriculture and destroying it. Sources of ozone in the troposphere include diffusion from the stratosphere, internal combustion engines, petrochemical smog, naturally from lightning and photochemically when nitrogen dioxide in polluted air is decomposed by sunlight. NO2(g) NO(g) + O(g) O2(g) + O(g) O3(g) Positive effects of ozone include that it can kill bacteria and viruses in water and thus is useful in purifying water supplies. B) Effects of Ozone in the Stratosphere Contrastingly to ozone in the troposphere, Ozone in the stratosphere is essential to life on earth, as it absorbs ultraviolet (UV) radiation which can be harmful to living cells on earth as they can damage living tissues and cause skin cancers. Ozone in the stratosphere is commonly referenced to as ââ¬Å"the ozone shieldâ⬠as it protects living organisms on earth from UV rays. Ozone Reactions in the Stratosphere and their Beneficial Effects on Living Organisms Formation of Ozone in the Stratosphere O2(g) O(g) + O(g) O(g) + O2(g) ââ â O3(g) Stratospheric oxygen absorbs UV light to form free oxygen radicals The oxygen radicals are highly reactive and combine with oxygen molecules to form an energized ozone molecule. Decomposition of Ozone in the Stratosphere O3(g) O2(g) + O(g) Due to the absorption of UV radiation, the Ozone layer acts as a radiation shield by absorbing medium and high energy UV rays. This protects living organisms as UV radiation can have very harmful effects on them including: Can cause sunburn on skin which can lead to skin cancer caused by a mutation in DNA Can form cataracts on eyes It can kill cells due to DNA readily reacting with UV rays It can impair photosynthesis in plants Many moreâ⬠¦ Thus without the ozone shield in the stratosphere, life in the biosphere would be dramatically impaired and destroyed by harmful UV rays. A) Functional Groups and General Structure of Compounds Classified as CFCââ¬â¢s CFCââ¬â¢s ââ¬â Chlorofluorocarbons are haloalkanes in which the hydrogen atoms have been replaced by fluorine or chlorine atoms. Haloalkanes are the products when alkanes react with halogens (members of group 7 of the periodic table). CFCââ¬â¢s generally contain ââ¬Å"chloroâ⬠and ââ¬Å"flouroâ⬠functional groups and no hydrogen atoms. The general structure of compounds classified as CFCs are haloalkanes whose hydrogens have been replaced by chlorine or fluorine atoms. E.g. B) Main Uses of CFCââ¬â¢s CFCââ¬â¢s were used as refrigerants and as propellants in aerosol spray cans. They have a variety of uses as demonstrated below. However due to the harmful effects of CFC to the environment and the ozone shield, CFCs are not used for these uses anymore. C) Reactions between CFCââ¬â¢s and Ozone that Result in the Destruction of Ozone in the Stratosphere. Effects of Small Concentrations of CFCââ¬â¢s that can Damage Large amounts of Ozone Reactions between CFCs and Ozone Synthetic CFCs are responsible for the destruction of the ozone shield, natural CFCs such as CH3Cl and HCl rarely reach the stratosphere as they readily oxidise in the troposphere. However, synthetic CFCs slowly diffuse from the troposphere into the stratosphere, where they undergo photodissociation (due to UV rays) to produce chlorine and bromine radicals that attack and destroy ozone molecules. e.g. CFC-11 Trichloroflouromethane (CFCl3) (Lifetime of 70 years) 1. In the stratosphere, the CFC comes into contact with short wavelength UV CFCl3(g) + UV ââ â CFCl2à ·(g) + Clà ·(g) 2. The chlorine free radical then reacts with the ozone molecule Cl + O3 ââ â ClO + O2 3. The ClO molecule reacts with free oxygen atoms which exist naturally from UV breakdown of O2 ClO + O ââ â O2 + Cl This Cl Is then regenerated and able to attack more Ozone (Step 2) thus further demonstrating the harmful effects of even one CFC This reaction causes destruction of ozone in the stratosphere, due to the (previously used) synthetic CFCs for refrigeration, dry cleaning etc. Small Amounts of CFCs can still do harm: Evidence has shown that even small amounts of CFCs can damage large amounts of ozone. Firstly, CFCs generally have a long lifespan, ranging from approximately 57 (CFC-11) years to 333 years (CFC-12), and due to the fact that each Chlorine radical can be responsible for the breakdown of tens of thousands of ozone molecules, and due to their lifespan once released, even a small amount, will be around for many decades to come. In addition, most CFCs will almost definitely make their way up to the stratosphere as they cannot be destroyed at low altitudes as they are unreactive and they are insoluble in water and therefore cannot be washed out of the atmosphere by rain. Alternative Compounds for CFCs. A) Ozone Monitoring Instruments Ozone Concentrations in the Stratosphere Source: Earth System Research Laboratory, 2012, Viewed 07.06.14, http://www.esrl.noaa.gov/gmd/dv/spo_oz/spototal.html A) Analysis of Trends There are a variety of trends that can be interpreted from the above diagram. Based on the data above, before the 1980ââ¬â¢s, the total ozone concentration was VERY high, at approximately 194 DU (Dobson Units), however there was a very rapid decrease in this concentration from 1980 ââ¬â 1999, whereby in this 19 year period sees a 56% decrease in the amount of total ozone, a remarkably concerning figure. On a year round basis globally, total ozone concentration have caused a 3-8% decrease in the amount of ozone, this increased in the years between 1995-200, where there was a low of total ozone concentration. However, in more recent years, 2010 to 2014 there has been a general increase in total ozone concentration, which can be inferred from the replacement of CFCs finally starting to impact (slightly) on the total concentration of ozone, this increase based on the data is 31%. The general pattern is that the total column ozone decreases during spring time, it can be inferred that the overall concentration of ozone decreases during this time of the year. This is because in an Antarctic winter, there is no U.V light to convert the chlorine molecule Cl2 into a Cl radical, which then destroy ozone molecules, and thus the concentration of ozone is higher in winter. In spring, the U.V light converts the Cl2 into Cl which then destroys ozone in a chain reaction, thus decreasing the total ozone concentration There are various peaks in the graph, in the years of 1988, 2003, 2011 and 2013, which may be due to limitation so of the instruments used. B) Montreal Protocol Effectiveness The Montreal protocol occurred in 1987, which the main aim was to control the production of ozone depleting substances (CFCs) worldwide. A number of amendments have been adopted to further ride ozone depleting substances. The protocol is applied in 193 countries. The main aims of the original agreement is as follow: Halt the use of Halons by late 1994 By the early 21st century, phase out the use of HCFCs Stop manufacture of CFCs by 1996 Allow for leeway with less developed countries but still get them to rid the use of these substances The Montreal Protocol (and amendments) has been effective as by 2006, the consumption of ozone depleting substances has been reduced globally by 96%. However, due to the long lives of the previously used ozone depleting substances, the total concentration will take hundreds of years to be completely down. However, the total concentration in the troposphere has generally been declining since the mid-1990s. Bibliography Thickett, G 2006, Chemistry 2 HSC course, John Wiley and Sons, Queensland, Australia. Role of Ozone, 2013, viewed 05.06.14, http://www.easychem.com.au/monitoring-and-management/the-atmosphere/roles-of-ozone Allen, J, 2001, Ultraviolet Radiation ââ¬â How it Affects life on Earth, viewed 05.06.14, http://earthobservatory.nasa.gov/Features/UVB/ Environmental Protection Agency, 2010, The Process of Ozone Depletion, Viewed 07.06.14, http://www.epa.gov/ozone/science/process.html Clean Air Strategic Alliance, 2013, Chlorofluorocarbons (CFCs) and Halons, Viewed 07.06.13, http://dwb.unl.edu/teacher/nsf/c09/c09links/www.casahome.org/chlorofl.htm Welch, C 2014, The Ozone Hole, Viewed 07.06.14, http://www.theozonehole.com/cfc.htm Cracknell, A 2012, Remote Sensing and Atmospheric Ozone, Viewed 07.06.14, http://books.google.com.au/books?id=YZzGFPnaEv0Cpg=PA94lpg=PA94dq=nimbus+4+satellite+ozonesource=blots=k3Ixvnqeupsig=Z_jW0D4jdcvG8hpjbb7d4QeUzBMhl=ensa=Xei=DpCSU-qHMsLtkQWJsIHQDQved=0CF8Q6AEwCg#v=onepageq=nimbus%204%20satellite%20ozonef=false ESA, 2013, Eathnet Online, Viewed 07.06.14, https://earth.esa.int/handbooks/gomos/CNTR1-2-2.htm The Canadian Ozone and Ultraviolet Measurement Program, 2010, Viewed 07.06.14 http://es-ee.tor.ec.gc.ca/e/ozone/ozonecanada.htm Earth System Research Laboratory, 2012, Viewed 07.06.14, http://www.esrl.noaa.gov/gmd/dv/spo_oz/spototal.html EPA, 2013, Ozone Layer Protection Glossary, Viewed 14.06.14, http://www.epa.gov/ozone/defns.html Bureau of Meteorology 2013, Ozone Frequently Asked Questions, Viewed 14.06.14, http://www.bom.gov.au/uv/faq.shtml Smith, R 2008, Conquering Chemistry Fourth Edition, The McGraw-Hill Companies, NSW, Australia 1 | Page
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