Man lives on a fragile planet which he calls "Earth". Life on this planet is basically dependent on the atmosphere. To man, the atmosphere is known as a surrounding influence on the air which surrounds the earth. This atmosphere provides a mixture of gasses, including water vapor, that allow all form s of life to survive. Two of the most important regions of the atmosphere are the troposphere and the stratosphere. The troposphere is the region of the atmosphere closes to the surface of the earth. The Stratosphere is the vertical structures of the atmosphere in which the incoming solar radiation with atmospheric constituents.Within the stratosphere is the ozone layer. The ozone layer is vital to every form of the life because its shields the Earth from the damaging ultra violet radiation from the sun. Nobody guessed that there are factors that might damage the protecting ozone. Then in the 1970's scientists warned that there is great danger that threatens the ozone layer. In 1985, British scientists discovered and NASA confirmed that for the past twenty years, a hole in the ozone has being forming over Antarctica and is said to be the size of forty eight States.
[...] Chlorofluorocarbons, methane and nitrous oxide are not only compounds that are causing the depletion of the ozone layer. Other chlorine-containing chemicals such as methychloroform and carbon tetrachloride contribute to the chorine content in the atmosphere. Chlorofluorocarbons with added hydrogen, which are known as HCFC's and used to subtitles to the chlorofluorocarbon, have a low ozone depletion potential. But if the emissions are allowed to increase in excessive amount, these could eventually contribute to chlorine content of the atmosphere. Although they really penetrated the atmosphere, natural chlorine from volcanic eruption and sea spray have very limited damaging effects to the ozone. [...]
[...] and NASA confirmed that for the past twenty years, a hole in the ozone has being forming over Antarctica and is said to be the size of forty eight States. Man's great technological and industrial activities whish result to the world wide emission of the chlorofluorocarbons are said to be the major culprits in the ozone's depletion. Studies have been conducted and have shown frightening consequences of this phenomenon. While a dilemma like this, there is an urgent need to fully understand the control the global threat that is posed on the mankind. [...]
[...] These compounds are responsible for 15 to 20 percent of the presently estimated increased warming of the atmosphere. Secondly, due to the depletion of the ozone layer, more sunlight enters and heats the troposphere which is the lower atmosphere. The redistribution of heat in the atmosphere, from higher to lower layers, may also cool the stratosphere. This could make a favorable condition for the formation of clouds, thus facilitating ozone depletion. Another compound that has a dangerous effect on the ozone layer is nitrous oxide. The amount of the nitrous oxide in the atmosphere has increase rapidly. [...]
[...] Upon man's creation, we have given the gift of intelligence and free will. He was told to have dominion over the earth and all other creations. Over the years, man was able to conquer his environment. He learns to use his environment to his advantage, to make his way of life more comfortable. Greater accumulation of knowledge led to the development of science and scientific knowledge was put into application. Thus, technology, which is the result of science caught into action, came about. [...]
[...] But there is the ozone layer which services as a vital and efficient protective shield for life on Earth. The ozone facilitates the maintenance of a more uniform surface temperature. It allows light rays from the sun to pass through. But it does not allow the generated heat ray to escape. It really does play a serious role in the regulating the Earth's temperature. With a uniform temperature, the ecosystem it kept in balance in nature. The mutual interdependence among organism is kept in accordance with the law of nature. [...]
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