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In a living ecosystem at which level,the...

In a living ecosystem at which level,the concentration of DDT is the most:

A

the place where DDT containing effluents mix with the water source

B

the planktons of a water body

C

within the carnivorous fishes of the water body

D

in the birds which feed on the fishes of the water body.

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MBD -HARYANA BOARD-ENVIRONMENTAL ISSUES-EXERCISE
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  2. State True or False: The UV rays and IR rays are ionising radiations.

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  3. State True or False: The photochemical smog contains PAN and Ozone.

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  4. Coin one word for the following statements: Discarded computer parts l...

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  5. Coin one word for the following statements: Degradation of organic was...

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  6. Coin one word for the following statements: Solid contents of sewage.

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  7. Coin one word for the following statements: Cleaning of vast areas cov...

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  8. Coin one word for the following statements: Growing of green plants al...

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  9. Identify the correct matching pair:

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  10. Which one of the following pairs is mis-matched ?

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  11. Which one of the following statements pertaining to pollutants is corr...

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  12. Prolonged liberal irrigation of agricultural fields is likely to creat...

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  13. Which of the following is not used for disinfection of drinking water?

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  14. Greenhouse effect is caused by

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  15. Which of the following will not be found in polluted water?

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  16. One of these contributes maximum to air pollution?

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  17. Photochemical smog causes:

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  18. In a living ecosystem at which level,the concentration of DDT is the m...

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  19. Due to water pollution:

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  20. Photochemical smog contains:

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