All of the following processes add nitrogen to ecosystems EXCEPT
A) oxidation of nitrogen by lightning.
B) fixation by symbiotic bacteria.
C) volatilisation of organic wastes.
D) industrial high temperature conversion of atmospheric nitrogen.
E) fixation by cyanobacteria.

Question

Quizplus · Accepted Answer

Volatilization of organic wastes is a process where nitrogen is converted from ammonium (NH4+) in organic matter or fertilizers into ammonia gas (NH3), which can be lost to the atmosphere. This process does not add nitrogen to ecosystems but rather results in the loss of nitrogen from soil or organic material.

All of the Following Processes Add Nitrogen to Ecosystems EXCEPT