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In a food chain consisting of grass, fro...

In a food chain consisting of grass, frog, bird and insects, where will the concentration of the harmful chemicals be maximum ?

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Bird
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LAKHMIR SINGH & MANJIT KAUR-OUR ENVIRONMENT-Exercise
  1. What percentage of energy available at the producer level is transferr...

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  2. Name the process in which a harmful chemical enters the food chain and...

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  3. In a food chain consisting of grass, frog, bird and insects, where wil...

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  4. If a harfmul chemical enters a food chain comprising cat, mice and pla...

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  5. Which radiations are absorbed by ozone layer ?

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  6. Name the man made component which is responsible for the depletion of ...

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  7. Name two waste materials which can be recycled.

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  8. Name the process by which the volume of solid wastes can be reduced.

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  9. If 5 joules of energy is available at producer level (plants), then ho...

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  10. State whether the following statement is true or false : Only 10 per...

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  11. Where does all the energy in living organisms originate from ?

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  12. Why are there rarely more than five links (or five organisms) in a foo...

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  13. Name two predators of snakes in a food web operating in a forest ecosy...

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  14. Fill in the following blanks with suitable words : (a) Ultraviolet r...

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  15. TEN PER CENT LAW

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  16. Write the full form of CFC. Give its one harmful effect.

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  17. Explain how, harmful ultraviolet radiations of sunlight are prevented ...

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  18. What are the causes of depletion of ozone layer ? Which diseases are l...

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  19. Explain how harmful chemicals enter our bodies.

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  20. If we excessively use pesticides to protect the crops from diseases, t...

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