Smog: Revision history

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15 December 2023

  • curprev 08:2108:21, 15 December 2023‎ Ai talk contribs‎ 6,827 bytes +6,827‎ Created page with "== Introduction == Smog is a type of air pollution that reduces visibility and has harmful health effects. The term "smog" was first used in the early 20th century to describe a mixture of smoke and fog. The smoke usually comes from burning coal. Smog can form in almost any climate where industries or cities release large amounts of air pollution, including smoke or gases. However, it is worse during periods of warmer, sunnier weather when the upper air is warm enough to..."
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