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What is the
ozone layer? |
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No, ozone is not the
bull's-eye on a target!. In fact, it's nothing you can see.
Ozone is a naturally occurring gas found in the earth's
atmosphere .At the outer edge of the atmosphere there is a
thin layer of ozone gas that is critical to life on earth.
It is the stratospheric ozone layer. This layer protects us
from the harmful rays of the sum. |
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If it weren't for the ozone
layer, we'd get wicked sunburns, wreck our eyes, and kill
our plants. |
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What Causes
Reduction Of the Ozone Layer? |
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When certain chemicals used
on earth escape into the atmosphere they are broken down by
solar radiation and release chlorine and bromine atoms
which, in a chain reaction, destroy ozone molecules. This
reaction occurs more frequently than natural ozone
replenishment, resulting in a thinning of the ozone layer. |
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Is the Ozone
layer Threatened? |
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Atmospheric measurements
tell us that the ozone layer is getting thinner, and than at
certain times of the year an ozone layer "hole"
appears over Antarctica. Some people believe this reduction
is due to solar or volcanic activity, but most scientists
believe that certain man-made chemicals are major
contributors to the problem. These chemicals include the
chloro-fluorocarbons (CFCs) found in refrigerators, solvents
and blowing agents for foams, and the halons used for fire
fighiting. |
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