`1.` Air pollution is one of the most serious types of pollution.
`2.` Air pollution occurs when the air contains gases, dust, fumes in harmful amounts.
`3.` The major source of air pollution is industrial waste from factories.
`4.` The second is the exhaust from cars, motor vehicles, and planes.
`5.` Air pollution can have dramatic effects. It causes disease, death to man, damage to other living organisms such as animals and food crops, or the natural environment.
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