Photochemical smog is a type of smog made when hydrocarbons and
nitrogen oxides mix with sunlight.
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Photochemical smog is caused by the action on chemicals of
sunlight.
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photochemical smog is formed by a complex process .
photochemical smog irritates breathing passages, plants, and damage
rubber,plants,and some plastics
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Photochemical smog can occur most anywhere. London-type smog
comes from factories and the burning of coal and fossil fuels,
where photochemical smog comes from hydrocarbons and nitrogen
oxides mixing with sunlight.