Q11 of 35 Page 128

Air pollution is caused by transport exhaust fumes and emission of gases like SO2, CO2, NO2 from industies. Similarly, water pollution is caused by ________ .

Sewage water contains various unwanted material such as harmful chemicals, plastics etc. hence pollute water.

More from this chapter

All 35 →
9

_________ is used in seeding clouds.

 10

An example for fossil fuel is _________ .

 12

If wild animals are killed, what difficulty would we face?

 13

Water is an essential commodity for survival. What can we do to help increase water resources?