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- 16:04, 18 January 2023 Dian talk contribs created page Air pollution (Created page with "Air pollution is the contamination of the indoor and outdoor environment by any substance or chemical that changes the nature of the atmosphere. Many pollutants come from the factory's and vehicles like cars, trucks and boats, however many air pollutants also come from natural sources like volcanoes, dust (mostly from deserts) and forest fires. Air pollutants have a major effect on human health. Studies have shown that air pollutants can cause heart and lung diseases. Ai...")
