Question

Mention the major causes of air pollution in metro cities. Write any three ways, which it can be reduced.

Answer 1

the major cause of air pollution in metro cities are:
1-by using public transport.
2-by taking bicycle and help of foot for short distance.
3-reduce fireplace and use wood stove.

Answer 2

methods

1 by using public transport
2 by using bicycle and foot to covered distance
3 by using those vehicle run by battery