Question 2:

The air that we breathe is present in the first zone of earth known as _______. It is 10 to 12 km from the surface of the earth.

Question 3:

Emissions from _______, ________ and manufacturing activities release high levels of carbon monoxide, organic compounds, and chemicals into the air.

Question 4:

__________ and agricultural activities are responsible for emission of greenhouse gases into the air. Trees clean the air by storing carbon dioxide, but due to heavy deforestation air pollution is on the rise.

Question 5:

_______ can change the soil chemistry of an area, and it can also leach out the nutrients inside it.

Question 6:

Pollution from natural occurrences such as _____, _______, ______,  pollen dispersal, evaporation of organic compounds and natural radioactivity cause air pollution.

Question 7:

Flow of air at high speed is called ______, and it is used to generate power by installation of  turbines.

Question 8:

Use of pesticides, fertilisers pollute the air by releasing harmful _______ into it.

Question 9:

Water exists in three forms: solid, liquid, and ________.

Question 10:

Minerals such as _______ and ______ are important sources of energy. They are widely used in different sectors such as transport, agriculture and industry.