Which among the following are human-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
a, c, d and f
There are two types of pollution: natural and human-made.
Human-made pollution has a huge effect on our environment and definitely ourselves. Few human-made sources of air pollution are:
i. Burning of firewood and dung cakes
ii. Factories
iii. Power plants
iv. Vehicles
Forest fires and volcanoes are natural sources of air pollution.