Question 20
The level of air pollution is higher at a busy traffic intersection. Why?

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Solution

A large number of automobiles stop for a short period at red light throughout the day and release a large quantity of gases (due to burning of petrol and diesel) which create air pollution. Motor vehicles are the major cause of air pollution in big cities.

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Question 20 The level of air pollution is higher at a busy traffic intersection. Why?

A large number of automobiles stop for a short period at red light throughout the day and release a large quantity of gases (due to burning of petrol and diesel) which create air pollution. Motor vehicles are the major cause of air pollution in big cities.

Question 20
The level of air pollution is higher at a busy traffic intersection. Why?