Nitrogen fixation means

  • A
    $N_2$ changes into $NO_3^-$
  • B
    $N_2$ changes into $NH_3$
  • C
    $NO_2^-$ changes into nitrates
  • D
    None of these

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$A$ farmer adds Azotobacter culture to soil before sowing maize. Which mineral element is being replenished?

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$N_2 + 8e^- + X + 16 ATP \rightleftharpoons 2NH_3 + Y + 16 ADP + 16 Pi$

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