what is smog give answer
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Smog is a kind of air pollution, originally named for the mixture of smoke and fog in the air. Classic smog results from large amounts of coal burning in an area and is caused by a mixture of smoke and sulfur dioxide. In the 1950s a new type of smog, known as Photochemical Smog, was first described.
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Smog is fog mixed with dust particles and smoke. It is most frequent in the industrial cities and in regions where the population is dense. During a smog visibility becomes poor and it also affects one's health.
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