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| OZONE is a
3-atom oxygen form of oxygen |
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| found in
both the troposphere and the |
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| stratosphere. Ozone in the stratosphere occurs |
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| naturally
and shields the earth’s surface from |
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| harmful
ultraviolet radiation. Ozone in the |
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| troposphere
is a pollutant associated with |
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| automobile
exhaust. |
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| Ozone can
be destroyed in the stratosphere by |
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| CFCs, a
chemical used in air conditioners, and |
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| aerosol spray cans. |
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