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Air pollution is defined as the contamination of the air by impurities. Pollution can affect humans, plants and also the environment. Impurities also known as pollutants can occur naturally or can occur as a result of human activities. Natural pollutants include: dust, pollen, smoke from forest fires, and gases from decaying organism. But nevertheless, human activities are the leading main cause of air pollution. Pollutants are classified as either primary or secondary. They are considered primary pollutants, because they come directly from various sources, and secondary which are by-products of chemical interactions of the primary pollutants within the atmosphere.
The most effective pollutants include: sulfur oxides, which are caused as a result of burning coals and oils. They are considered the most dangerous and irritating of all pollutants (Haynes, 1994). Sulfur dioxide can be converted to sulfuric acid which is deposited back into the earth by rain. This is known as acid......

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Approximate Pages: 4 (250 words per double-spaced page)

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