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Ozone layer
Upper atmosphere layer composed of ozone, a gas made up of molecules comprised of three oxygen atoms, which helps to shield the earth from ultraviolet rays.
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Atmospheric sciences
Greenhouse gases
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Ozone in our air - friend or foe? - depends on where
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Article on ozone layer and ozone as a pollutant from the weekly newsletter Volcano Watch (Hawaiian Volcano Observatory) for August 20, 2001.
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