What is Air pollution? Also give its causes.


Air polution is basically the presence of chemical or biological materials in the air that causes discomfort.
Air pollution means any undesirable change in the quality of fresh air.
Some of the major causes of air pollution are:
1. Smoke and particulate matter produced by industries and nuclear power plants
2. Use of chemical fertilisers and pesticides in agriculture
3. Smoke produced by vehicles and automobiles
4. Use of nuclear weapons in wars.
5. Burning of agricultural wastes
6. Waste deposition in land fills

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