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Air Pollution
Beginning of paper
Biology 2B
The Problem
Contamination of the atmosphere by gaseous, liquid, or solid wastes or
by-products that can endanger human health and the health and welfare of plants
and animals, or can attack materials, reduce visibility, or produce undesirable
odors. Among air pollutants emitted by natural sources, only the radioactive
gas r .... Middle of paper
.... ozone, a dangerous pollutant in smog,
is produced by the interaction of hydrocarbons and nitrogen oxides under the
influence of sunlight. Ozone has also caused serious crop damage. On the other
hand, the discovery in the 1980s that air pollutants such as fluorocarbons are
causing a loss of ozone from the earth's protective ozone layer has caused the
phasing out of these materials.
Current information about the problem
The tall smokestacks u ....
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Number of words: 726
Number of pages: 3 (approx. 250 words per double-spaced page)
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