Question 2:

Air pollution causes a variety of environmental effects such as _______, ______, ________, damage to crops and forests, and climate change.

Question 3:

Soil contains _____, ____, which provide a source for medicines, cosmetics, talcum powders etc.

Question 4:

_____ plays an important role in the water cycle as water gets evaporated from soil, oceans etc due to Sun’s heat and form clouds. The clouds get cooled by ____ and then these clouds shower as rains. So rainfall depends on the current of the ___.

Question 5:

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

Question 6:

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

Question 7:

Burning of ________, wood and rubber also release harmful gases and pollutes the air.

Question 8:

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

Question 9:

Groundwater gets contaminated due to the use of ________, fertilisers and chemicals and causes serious health hazards to the wildlife in aquatic ecosystems such as diseases, birth defects, and reproductive failure. 

Question 10:

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