Complete the following cycle by labelling A-D and answer the given questions

CBSE Class 9 CBSE Class 9 Science
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1

Complete the following cycle by labelling A-D and answer the given questions.

(i) What will happen, if step D does not occur?
(ii) State two free-living nitrogen-fixing bacteria.

2

A - Ammonification B - Nitrites
C— Nitrates D — Denitrification
(i) If step D does not occur then there will be no replenishment of atmospheric nitrogen.
(ii) Azotobacter and Clostridium.