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The Atmospheric Ozone Layer
Beginning of essay
The stratospheric ozone layer exists at altitudes between about 10 and 40km
depending on latitude, just above the tropopause. Its existence is crucial for
life on earth as we know it, because the ozone layer controls the absorption of
a portion of the deadly ultraviolet (UV) rays from the sun. UV-A ....
Middle of essay
.... that spring values of
total ozone during the 1980-1984 period had fallen dramatically compared to the
earlier period between 1957-73. This decrease had only occurred for about six
weeks in the Southern Hemisphere spring and had begun in the spring of 1979.
This discovery placed the British scientists into the limelight of world
publicity, for it revived a somewhat sagging public interest in the potential
destruction of the stratospheric ozone layer by anthropogenic trace gases,
particularly nit.... |
| Number of words: 2378 |
Approximate pages: 9 |
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