The Ozone Layer.

I. The Ozone Layer The Earths atmosphere is divided into several layers. The lowest region, the troposphere, extends from the Earths come on 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 difficult in a layer in the stratosphere, about 15-30 kilometers supra 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. prohibited of each(prenominal) 10 one million million million denude molecules, about 2 million ar normal oxygen, nevertheless only 3 are ozone. However, even the small meat 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 portion o f invisible light called UVB. UVB has been linked to umpteen harmful effects, including various types of sputter 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 switch subjectively 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 evidence has shown that the ozone shield is being deplet! ed well beyond changes due to natural processes. II. Ozone Depletion For over 50 years, chlorofluorocarbons, or CFCs, were apprehension of as miracle substances. They are stable, nonflammable, low in toxicity, and inexpensive to produce. everyplace time, CFCs found uses as refrigerants, solvents, foam blowing... If you require to get a full essay, order it on our website: OrderCustomPaper.com

If you want to get a full essay, visit our page: write my paper