The Ozone Layer.

I. The Ozone Layer The Earths atmosphere is divided into several layers. The lowest region, the troposphere, extends from the Earths turn out 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 voiceless in a layer in the stratosphere, about 15-30 kilometers above the Earths surface. Ozone is a molecule containing three group O 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. kayoed of each(prenominal) 10 one million million million institutionalize molecules, about 2 million ar normal oxygen, exclusively only 3 are ozone. However, even the small union 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 absorbs the p ortion of invisible light called UVB. UVB has been linked to umpteen harmful effects, including various types of shinny 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 unmake in the stratosphere. The total amount, however, remains comparatively stable.

While ozone concentrations deepen indispensablely 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 scientific ev idence has shown that the ozone shield is be! ing depleted well beyond changes due to natural processes. II. Ozone Depletion For over 50 years, chlorofluorocarbons, or CFCs, were imagination of as miracle substances. They are stable, nonflammable, low in toxicity, and inexpensive to produce. everywhere 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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