Page 187 - Health, Population and Environment Education 9

Exercise

A. Write very short answer to the following questions.
1. What does ‘environ’ mean?
2. Mention any two measures to maintain environment health in school and family.
3. What are pollutants?
4. Give two examples each of solid, liquid and gaseous pollutants.
5. What is global warming?
6. What is ozone layer depletion?
7. Which is the major cause of flood and landslide?
8. What pollution is caused by industrialization?
9. Which pollution leads towards respiratory problems?
10. Write two diseases caused by water pollution.
11. How are farmers responsible for land pollution?
12. What is noise?
13. How much decibel of sound is suitable during day and night time for good
health?
14. How much decibel sound is tolerable to human ear?
15. Why are certain places regarded as horn free zones?
16. How much percentage of wastes produced are biodegradable and non-
biodegradable?
17. What are landfill wastes?
18. Which process is used to make new substance from broken glasses and metals?
19. In which method earthworms are used for preparing compost?
20. What is drainage?
21. How far should simple pit latrine be made from home?
22. Which latrine is constructed in fairs and camps?
23. Which type of latrine can be constructed inside or outside home?

B. Write short answer to the following questions.
1. What is environment health? Why do we need it?
2. What are the natural sources of pollution?
3. What is pollution? What are the causes of air pollution?
4. What is water pollution? Write the effects of water pollution?
5. What is land pollution? How can we control land pollution?
6. What is sound pollution? What are the causes of sound pollution?
7. How does human ignorance increase pollution?
8. What are solid wastes? Explain briefly about their types.
9. Explain briefly about 3R method.

GREEN Environment Population and Health Education Book-9 187