CBSE Class 9 Biology Natural Resource Air

Q.

What is the biological activity which results in the formation of water vapour?



Q.

Which of the following is the natural source of air pollution?



Q.

What is the air pollutant caused by tiny particles in the air?



Q.

Without the greenhouse effect, the temperature of the Earth would go down to



Air

Understand the composition of air and role of atmosphere. Effects of pollution of air such as acid rain and smog.