Atmospheric nitrogen is directly replenished in nature through
-
A.
the activities of denitrifying bacteria -
B.
the breakdown of ammonium salts in the soil -
C.
the activities of nitrifying bacteria -
D.
the activities of nitrogen-fixing bacteria in root nodules -
E.
egestion, death and decay
Correct Answer: Option A
Explanation
The nitrogen in the soil is converted to atmospheric nitrogen by the process of DENITRIFICATION. This is done by the action of denitrifying bacterias eg several species of Pseudomonas.