The nitrogen content of the biosphere remains constant due to:

  • A
    Nitrogen fixation
  • B
    Nitrogen cycle
  • C
    Industrial pollution
  • D
    Absorption of nitrogen

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Nitrifying bacteria are those which can convert

Nitrite is converted into nitrate by ........ bacteria.

Decomposition of organic nitrogen of dead plants and animals into ammonia is called.

Which organisms actively participate in the nitrogen cycle in nature?

Which of the following soil microorganisms breaks down plant and animal protein into ammonia?

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