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O3, is a molecule that consists of three oxygen atoms
bonded together. The ozone layer in the stratosphere absorbs UV radiation and
creates a warm layer of air in the stratosphere and is therefore responsible for
the thermal structure of the stratosphere. Ozone that is present in the
troposphere is mostly a result of anthropogenic pollution and therefore higher
concentrations are found in urban areas. Ozone is involved with NOx
in the photochemical production of many of the constituents of pollution
environments (see nitrogen oxides and hydroxyl radicals.)
[Chemical and
Engineering News; v72; 6-7; 1994.] [Aviation Week and Space Technology; v140;
20-21; 1994.]
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