Air pollution occurs when there are pollutants in the air. Pollutants are substances harmful to humans or other organisms and damages the natural environment and the atmosphere. Most pollutants are the result of human activities such as burning fossil fuels,release of harmful gases and fine particles released by vehicles,factories and quarries. The concentration of pollutants depends on certain factors such as area and flow air.
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8/12/2019 Air Pollution Science Folio -by Hanisah
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