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Our Environment...

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  • Question 1
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    Biotic factors are

  • Question 2
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    Disposable plastic plates should not be used because:

  • Question 3
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    Choose the correct option for the flow of energy in an ecosystem.

  • Question 4
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    Choose the correct statements with respect to biodegradable and non-biodegradable substances.

  • Question 5
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    Which of the following consequences is due to the over exploitation of natural resources by man?

  • Question 6
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    The given figure shows the transfer of energy in an ecosystem. In the given food chain, 10,000 J of energy is available to the producers. Calculate and find the amount of energy available to the higher carnivores.

  • Question 7
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     Why are crop fields known as artificial ecosystems?

  • Question 8
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    Which of the following statements is related to biological magnification?

  • Question 9
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     What are the advantages of cloth bags over plastic bags during shopping?

  • Question 10
    1 / -0

    Consider the following food chain in the same lake.
    $$Aquatic \: plant\rightarrow Small \: fish\rightarrow Big \: fish\rightarrow Birds$$
    Which of the above organisms is likely to show a minimum amount of pesticide concentration in them?

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