The Ozone Layer.

I. The Ozone Layer The Earths atmosphere is divided into several layers. The lowest region, the troposphere, extends from the Earths clear up to about 10 kilometers (km) in altitude. The next layer, the stratosphere, continues from 10 km to about 50 km. Most atmospheric ozone is laborious in a layer in the stratosphere, about 15-30 kilometers preceding(prenominal) the Earths surface. Ozone is a molecule containing three atomic number 8 atoms. It is blue in disguise and has a strong odor. Normal oxygen, which we breathe, has two oxygen atoms and is dull and odorless. Ozone is much less common than normal oxygen. prohibited of each(prenominal) 10 one million million million agate line molecules, about 2 million ar normal oxygen, just only 3 are ozone. However, even the small gist of ozone plays a key subroutine in the atmosphere. The ozone layer absorbs a portion of the radiation from the sun, preventing it from stretchiness the planets surface. Most importantly, it ab sorbs the portion of ultraviolet light light called UVB. UVB has been linked to umpteen harmful effects, including various types of pare down cancer, cataracts, and harm to some crops, certain materials, and some forms of marine life. At any given time, ozone molecules are unceasingly formed and ruined in the stratosphere. The total amount, however, remains comparatively stable.

While ozone concentrations leave cancelly with sunspots, the seasons, and latitude, these processes are well still and predictable. Each natural reduction in ozone levels has been followed by a recovery. Recently, however, convincing s cientific evidence has shown that the ozone ! shield is being depleted well beyond changes due to natural processes. II. Ozone Depletion For over 50 years, chlorofluorocarbons, or CFCs, were approximation of as miracle substances. They are stable, nonflammable, low in toxicity, and inexpensive to produce. over time, CFCs found uses as refrigerants, solvents, foam blowing... If you require to get a full essay, order it on our website: OrderCustomPaper.com

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