Question

what is smog ??????......​

Answer 1

Answer:

Smog is a type of intense air pollution. The word "smog" was coined in the early 20th century, and is a contraction of the words smoke and fog to refer to smoky fog; its opacity, and odor. Wikipedia

Answer 2

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• Photochemical smog is produced when sunlight reacts with nitrogen oxides and at least one volatile organic compound (VOC) in the atmosphere. Nitrogen oxides come from car exhaust, coal power plants, and factory emissions. VOCs are released from gasoline, paints, and many cleaning solvents.

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