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Tag: Our Environment
Which of the following constitutes a food-chain ? (a) Grass, wheat and mango (b) Grass, goat and human (c) Goat, cow and elephant (d) Grass, fish and goat
Class 10
Biology
11/03/2022
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Which of the following groups contain only biodegradable items ? (a) Grass, flowers and leather (b) Grass, wood and plastic (c) Fruit peels, cake and lime juice (d) Cake, wood and grass
Class 10
Biology
11/03/2022
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How can you help in reducing the problem of waste disposal ? Give any two methods.
Class 10
Biology
11/03/2022
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What is ozone and how does it affect any ecosystem ?
Class 10
Biology
11/03/2022
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Give any two ways in which non-biodegradable substances would affect the environment.
Class 10
Biology
10/03/2022
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Give any two ways in which biodegradable substances would affect the environment.
Class 10
Biology
10/03/2022
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Why are some substances biodegradable and some non-biodegradable ?
Class 10
Biology
10/03/2022
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What is the role of decomposers in the ecosystem ?
Class 10
Biology
10/03/2022
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What are trophic levels ? Give an example of a food chain and state the different trophic levels in it.
Class 10
Biology
10/03/2022
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