Question
Describe the major sources of air pollution.
Solution
The major sources of air pollution are:
(i) Natural sources such as: Volcanic eruptions, dust storms, fires etc. and human-made sources such as factories, urban centres, automobiles, aircrafts, fertilizers and pesticides, power plants etc.
(ii) Industries emit several poisonous gases and dust, power house emit sulphur and carbon dioxide. Chlorofluorocarbon is also emitted in the atmosphere which harms the ozone layer.
(iii) Other sources are many industrial processes such as paper and pulp, leather and chemical industry.
