Q. N2 content is kept constant in the biosphere due to

  • (A) Absorption of N2
  • (B) N2 fixation
  • (C) Industrial pollution
  • (D) Nitrogen cycle
✅ Correct Answer: (D) Nitrogen cycle

Published by Ram Sharma ⭐ 193.88K Points at 20-Nov-2021 01:16 pm in Chemistry

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