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PSEB-OUR ENVIRONMENT-EXERCISE
- Which of the following groups contains only biodegradable items:
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- Which of the following constitute a food chain?
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- Which of the following are environment-friendly practices?
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- What will happen if we kill all the organisms in one trophic level?
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- Will the imact of rKHOoving all the organisms in a trophic level be di...
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- What is biological magnification? Will the levels of this magnificatio...
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- What are the problKHO caused by the non-biodegradable wastes that we g...
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- If all the wastes we generate is biodegradable,will this have no impac...
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- Why damage to the ozone layer is a cause of concern?What steps are bei...
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