Page 2 - 3- Home Assignment I (Obj & Subj)-Air, Rain and Air pollution

(b) increase in photosynthesis in plants
(c) global warming
(d) abundance of desert plants
10 Low visibility during cold weather is due to
(a) formation of fossil fuel
(b) Unburnt carbon particles or hydrocarbons suspended in air
(c) lack of adequate power supply
(d) none of these

Subjective

1. What are the two different sources of air pollution? 1 E
2. Define natural resources. 1 E
3. Explain how the Atmosphere is helpful for living organisms on earth? 1 Av
4. List out and explain any three human activities that you think would lead 3 Av
to air pollution.
5. In the coastal areas, wind current moves from the sea towards the land 3 D
during the day; but during the night it moves from land to the sea.
Discuss the reason.
6. How are clouds formed? Explain 3 D