What is air pollution? When any physical, chemical, or biological material mixes with the natural atmosphere and harms nature and humans, it is called air pollution. If any one or more pollutants like dust, fumes, gas, odor, smoke, or vapor contaminate the atmosphere for a certain period or quantity. It is harmful to human health and is called air pollution.  Smog is a type of air pollution containing smoke, fog, and other pollutants that reduce visibility. Air pollution may be in any form: solid, liquid, or gas.  It may be man-made or natural.   Natural air pollution is generally produced by natural processes like the eruption of volcanoes, or abnormal processes like the combustion of fossil fuels, etc. Man-made air pollution is produced due to various productions and waste. It is a silent killer and is on the rise due to urbanization and industrial growth. Reasons or sources of man-made air pollution: There are various reasons or sources of air pollution, however, some are lis