Question 2:

__________ 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 3:

Industrial waste dumped into water bodies cause chemical imbalance, leading to _____ pollution.

Question 4:

_____ occur when air gets polluted with sulphur dioxide and nitrogen oxide. Then they mix with water particles in the air to form a toxic substance. ________ lead to increased growth of algae, which leads to eutrophication.

Question 5:

_______ acts as a universal solvent and gases such as oxygen, nitrogen, carbon dioxide and solids such as salts get readily dissolved with it.

Question 6:

______ leads to blocking of sunlight from entering water bodies and reduces oxygen values in water, which creates an inhabitable environment.

Question 7:

The zone above troposphere is called the ________. It is rich in ozone gas, which forms the ozone layer. 

Question 8:

_________ helps to create energy for plants and animals. Body cells take up ________ from blood and generate energy from food.

Question 9:

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 10:

Major air pollutants include ______, ______, ______.