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Our Radiant Planet- Depletion Of The Ozone Layer
Beginning of essay
Ozone is a relatively unstable form of molecular oxygen containing three oxygen
atoms produced when upper-atmosphere oxygen molecules are split by ultra violet
light. Stratospheric ozone is found in a broad band, extending generally from 15
to 35km above the earth. Although the ozone layer is sur ....
Middle of essay
....damaging UVB radiation received from the Sun,
a small amount slips by, damaging out skin in the form of sunburns and suntans.
UVB radiation is strongly absorbed in the skin and in the outer layers of the
eye. Human skin has developed various defence mechanisms against the damaging
effects of UV radiation. The skin adapts to increased UV exposure by thickening
its outer layer and by developing pigmentation that serves to shade the more
vulnerable and deeper residing dividing cells. Overly damage.... |
| Number of words: 978 |
Approximate pages: 4 |
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