Question

-On the diagram of the nitrogen cycle, which number represents nitrite (NO₂)?
A) 1 
B) 2 
C) 3 
D) 4

Accepted Answer

Nitrite (NO₂⁻) is typically produced in the soil through the process of nitrification, which involves the oxidation of ammonia (NH₃) to nitrite by bacteria such as Nitrosomonas. This step is part of the nitrogen cycle, where nitrite is then further oxidized to nitrate (NO₃⁻) by other bacteria like Nitrobacter.