Question

6.57
VOTSCCL
(1)
(1)
Class: 10
Answer the following:
Marks: 20
1. Why is ozone layer getting depleted at the higher levels of the atmosphere?
2. What is the role of decomposers in the ecosystem?
3. How is the increase in demand for energy affecting our environment adversely?
4. What is the important function of presence of ozone in an earth's atmosphere?
5. Which diseases are caused in human beings due to depletion of ozone layer in the atmosphere?
6. Which compounds are responsible for the depletion of ozone layer?
7. What is 10% law?
8. In an ecosystem, rats feed on grains. Name the trophic level to which the rats belong.
9. What steps are being taken to limit the damage to the ozone layer?
10. State two problems caused by the non- biodegradable waste that we generate in our daily life.
11. How can you help in reducing the problems of waste disposal? Give any two methods.
12.Explain the phenomenon of “biological magnification” How does it affect organisms belonging
to different trophic levels particularly the tertiary consumers.
13. a. Indicate the flow of energy in an ecosystem. Why is it unidirectional? Justify.
b. Which organism receives maximum amount of toxic chemicals? Why?
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(3)​

Answer 1

Answer:

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