One of the useful activities of several bacteria is

  • A
    Nitrogen fixation
  • B
    Nitrification
  • C
    Operation of biogeochemical cycles
  • D
    All of the above

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Similar Questions

Which of the following is correctly matched?

Which of the following is mismatched?

$Assertion (S)$: Ernest Chain and Howard Florey were awarded the Nobel Prize in $1948$.
$Reason (R)$: Lactic acid is produced by the fungus $Aspergillus$ $niger$.

Which one of the following is correct?

Which one of the following pairs is wrongly matched?

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