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How human activities increased the suppl...

How human activities increased the supply of fixed nitrogen available to the primary producers?

A

Use of nitrogen fertilisers

B

Increased cultivation of legumes

C

Deliberate burning of fields

D

All of the above

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The correct Answer is:
D
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ARIHANT NEET-ENVIRONMENTAL ISSUES-Chapter exercises (A) Taking it together (Assorted Questions of the Chapter for Advanced Level Practice)
  1. Fly ash is environmental pollutant produced by

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  2. Most harmful type of environmental pollutants are

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  3. Which process does not result in the return of carbon dioxide to the a...

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  4. Which air pollutant could cause rains to be acidic?

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  5. Why does the oxygen concentration in the water decrease when sewae is ...

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  6. Ozone hole is the

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  7. Which of the following statements is incorrect?

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  8. How human activities increased the supply of fixed nitrogen available ...

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  9. Which of the following is not thought to be a possible consequence of ...

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  10. Ozone is

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  11. The destruction of the ozone layer is most directly linked to the

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  12. Eutrophication in lakes is the direct result of

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  13. Which of these show a result of deforestation and its effect on the en...

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  14. What is a long-term effect of cutting down larger areas of rainforests...

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  15. Some possible properties of modern insecticides are listed below. When...

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  16. A lake has been polluted by sewage. Compared with unpolluted water, th...

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  17. The table shows the oxygen level, numbers of green plants and of fish ...

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  18. In pollution, the term 'synergism' is used for

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  19. Ecological balance of a mining area is restored through

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  20. Lichens are organisms, which are very sensitive to air pollution. The ...

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