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Class : 7

Subject : Science

Unit : 4.10 Lesson :Biodiversity and Environment

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1.) Differentiate between wetlands and watersheds.

2.) Differentiate between reuse and recycle.

3.) It is not good for farmers to kill snakes. Why?

4.) Industrialization and urbanization cause environmental imbalance. Why?

5.) Green plants help to balance the environment. Why?

6.) Water is a renewable natural resource. Why?

7.) Coal is a non-renewable natural resource. Why?

8.) Sunlight is a perpetual natural resource. Why?

9.) It is not good to burn agricultural waste. Why?

10.) Define natural resources

11.) Define environment.

12.) What is biodiversity?

13.) Define watershed.

14.) What are wetlands?

15.) Name the water resource from where rivers originate.

16.) What does 3 R's model of solid waste management stand for?

17.) Is forest a non-renewable natural resource?

18.) Define perpetual, renewable and non-renewable natural resources with two examples of each.

19.) List any four points to show the importance of natural resources.

20.) What is the importance of water resources?

21.) How can we conserve water resources?

22.) What roles can human beings play to balance nature?

23.) How does afforestation help to balance the environment?

24.) Write short notes on: i. non-renewable source of energy ii. solid waste management ii. wetlands iv. watersheds

25.) What role can we play to manage solid waste?

26.) What is Environment?

27.) What is biodiversity?

28.) What are natural resources?

29.) What are renewable resources?

30.) What are non-renewable resources?

31.) What is water resources?

32.) What are the examples of water resources?

33.) What are the main sources of water?

34.) What is watershed?

35.) What is water reserve?

36.) What are the main water reserves in Nepal?

37.) What are wetlands?

38.) What is the importance of water resources?

39.) What is depletion of natural resources?

40.) What are the causes of depletion of natural resources?

41.) What is management of solid waste?

42.) What are the 3Rs process of solid waste management?

43.) What is a bio-degradable waste?

44.) What is a non- biodegradable waste?

45.) What is reducing in solid waste management?

46.) What is reuse in solid waste management?

47.) What is recycle in solid waste management?

48.) What is the importance of solid waste management?

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