Which of the following are man made sources of air pollution?
Power plants
Forest fires
Volcanoes
None of these
iv. Vehicles
Which among the following are man-made sources of air pollution? a. Burning of fire wood and dung cakes b. Forest fires c. Factories d. Power plants e. Volcanoes f. Vehicles
State :
(i) natural sources of air pollution
(ii) man-made sources of air pollution