Question

questions
1) how does air become polluted
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Answer 1

Answer:

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Air pollution is caused by gases and particles emitted to the atmosphere by a variety of human activities, such as the inefficient combustion of fuels, agriculture, and farming. There are also natural sources contributing to air pollution, including particles of soil dust and salt in sea spray.

Answer 2

Answer:

Air pollution is caused by solid and liquid particles and certain gases that are suspended in the air. These particles and gases can come from car and truck exhaust, factories, dust, pollen, mold spores, volcanoes and wildfires. The solid and liquid particles suspended in our air are called aerosols.