I. The Ozone Layer The Earths atmosphere is divided into any(prenominal)(prenominal) layers. The lowest region, the troposphere, extends from the Earths surface up to nigh 10 kilometers (km) in altitude. The next layer, the stratosphere, continues from 10 km to about 50 km. close atmospheric ozone is concentrated in a layer in the stratosphere, about 15-30 kilometers above the Earths surface. Ozone is a molecule containing three atomic number 8 atoms. It is blue in dissemble and has a strong odor. conventionality oxygen, which we breathe, has two oxygen atoms and is fatigue and odorless. Ozone is much less leafy ve readyable than normal oxygen. Out of each(prenominal) 10 one zillion million million air molecules, about 2 million ar normal oxygen, but besides 3 argon ozone. However, even off the small amount of ozone plays a key subroutine in the atmosphere. The ozone layer absorbs a piece of ground of the radiation from the sun, preventing it from stretchiness the planets surface. around importantly, it absorbs the portion of ultraviolet elucidate called UVB. UVB has been linked to umpteen pestiferous effects, including various types of skin cancer, cataracts, and malign to some crops, certain materials, and some forms of marine life. At any wedded time, ozone molecules ar unceasingly make and destroyed in the stratosphere. The good amount, however, remains comparatively stable.
small-arm ozone concentrations vary indwellingly with sunspots, the seasons, and latitude, these processes are wellhead still and predictable. distributively natural reduction in ozone levels has been followed by a recovery. Recently, however, persuade scientific evidence has shown that the ozone rampart is being depleted well beyond changes due to natural processes. II. Ozone Depletion For over 50 years, chlorofluorocarbons, or CFCs, were thought of as miracle substances. They are stable, nonflammable, low in toxicity, and low-priced to produce. Over time, CFCs found uses as refrigerants, solvents, foam blowing... If you require to get a full essay, tell apart it on our website: Ordercustompaper.com
If you want to get a full essay, wisit our page: write my paper