Question 2:

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

Question 3:

_____ 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 4:

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

Question 5:

Oxygen and _________ of stratosphere protect us from the ill-effects of ultraviolet light rays of sunlight.

Question 6:

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

Question 7:

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

Question 8:

____ is a good conductor of sound, we can hear speech or music or noise in the presence of _____.

Question 9:

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

Question 10:

______ minerals include iron, aluminium, copper, tin, nickel, silver, gold and platinum etc.