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Ozone
Beginning of essay
(O3) is a molecule consisting of three oxygen atoms, similar to the oxygen
we breathe (O2), however oxygen consists of only two oxygen atoms. In the
stratosphere, a region high up in the upper atmosphere, light rays are
responsible for the breaking down of oxygen (O2), breathable oxygen into its ....
Middle of essay
....th have
always been exposed to some, and only slightly differing levels of UV-B
radiation depending of geographic location and season. Through evolution,
cellular repair mechanisms have evolved to safeguard cells against damage done
by UV-B radiation. With the increase in the UV-B radiation, more damage is done
to cellular functions then the natural protection system can deal with
(Environment Canada, 1996). Life on earth would more or less be void if not for
the formation of the ozone layer .... |
| Number of words: 1858 |
Approximate pages: 7 |
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