Question

Define air pollution.
Describe any four sources of air pollution.​

Answer 1

the presence in or introduction into the air of a substance which has harmful or poisonous effects.

mobile sources – such as cars, buses, planes, trucks, and trains

stationary sources – such as power plants, oil refineries, industrial facilities, and factories

area sources – such as agricultural areas, cities, and wood burning fireplaces

natural sources – such as wind-blown dust, wildfires, and volcanoes

Answer 2

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