Explain 'tropospheric pollution' in 100 words or less.
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Solution
The presence of unwanted substances in the lowest layer of the atmosphere results in tropospheric pollution. They are usually classified as gaseous and particulate pollutants.
Major gaseous pollutants include oxides of sulphur, nitrogen, carbon and hydrocarbons.
Particulates of smoke dust mist and fume are harmful to human health and cause respiratory ailments.