Solutions of chapter 16. Environmental Issues

1

What are the various constituents of domestic sewage? Discuss the effects of sewage discharge on a river.

2

List all the wastes that you generate, at home, school or during your trips to other places. Could you very easily reduce the generation of these wastes? Which would be difficult or rather impossible to reduce?

3

Discuss the causes and effects of global warming. What measures need to be taken to control global warming?

4

Match the items given in column A and B:

Column A	Column B
(a) Catalytic converter	(i) Particulate matter
(b) Electrostatic precipitator	(ii) Carbon monoxide and nitrogen oxides
(c) Earmuffs	(iii) High noise level
(d) Landfills	(iv) Solid wastes

5

Write critical notes on the following:

Eutrophication

5

Write critical notes on the following:

Biological magnification

5

Write critical notes on the following:

Groundwater depletion and ways for its replenishment

6

Why does ozone hole form over Antarctica? How will enhanced ultraviolet radiation affect us?

7

Discuss the role of women and communities in protection and conservation of forests.

8

What measures, as an individual, would you take to reduce environmental pollution?

9