what is air pollution ?
any chemicals that surrounds the atmosphere of a particular place.
chemicals from factories, car emissions, gasoline, ect.
Air pollution is the introduction into the atmosphere of chemicals, particulates, or biological materials that cause discomfort, disease, or death to humans, damage other living organisms such as food crops, or damage the natural environment or built environment. for more reading https://en.wikipedia.org/wiki/Air_pollution
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