which is more harmful; photochemical smog or classic smog and give reason
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which is more harmful; photochemical smog or classic smog and give reason
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Answer:
Sulfurous smog results from a high concentration of sulfur oxides in the air
and is caused by the use of sulfur-bearing fossil fuels, particularly coal.
Photochemical smog, which occurs most prominently in urban areas that
have large numbers of automobiles, requires neither smoke nor fog. This
type of smog has its origin in the nitrogen oxides and hydrocarbon vapors
emitted by automobiles and other sources, which then undergo
photochemical reactions in the lower atmosphere.