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Smog is |
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Answer» A combination of smoke and FOG Smog is air pollution that reduces visibility. The term "smog" was first used in the EARLY 1900s to describe a mix of smoke and fog. The smoke usually came from burning coal. Smog was common in industrial AREAS, and remains a familiar sight in CITIES today. Today, most of the smog we SEE is photochemical smog. |
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