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CPC CAMBRIDGE PUBLICATION-OUR ENVIRONMENT-UNIT TEST(ANSWER THE FOLLOWING QUESTIONS)
- Define ecology?
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- Why are green plants called producers ?
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- Construct an aquatic food chain showing four trophic levels.
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- What step is being taken to limit the damage to the ozone layer?
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- How can you help in reducing the problem of waste disposal ? Give any ...
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- Why are some substances biodegrable and some non- biodegradable?
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- What is the role of decomposers in the eco system?
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- How is the increase in demand for energy affecting our environment adv...
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