What are the main sources of air pollution in our country?

(Read the passage and answer the question)

The people of the urban areas are the worst sufferers of the main pollutions.

In Bangladesh the indiscriminate and unplanned industrialization over the past decades has created significant environmental problems.

We can reduce air pollution by reducing the use of motor vehicles, avoiding the use of unfit or poorly serviced vehicles and by using proper lubricants for vehicles.

Two kinds of pollutions have been mentioned here in the passage. Yes, I think, there are some other forms of pollutions too. They are soil pollution, sound pollution and odour pollution.

LPG means Liquid Petroleum Gas. It is used as a fuel for many residential, commercial and agricultural heat applications including cooking, heating, fuelling cars, etc.

CNG stands for Compressed Natural Gas. We can lessen the level of emission and pollution by using CNG, LPG for fuelling oils, relocating hazardous industries to areas away from human habitations.