Complete the nitrification process equation:
........... $+$ .......... $\rightarrow 2NO_2^- + 2H^+ + 2H_2O$

Describe the Nitrogen Cycle.

Reaction carried out by $N_{2}$ metabolising microbes include:
$I.$ $2 NH_{3} + 3 O_{2} \rightarrow 2 NO_{2}^{-} + 2 H^{+} + 2 H_{2} O$
$II.$ $2 NO_{2}^{-} + O_{2} \rightarrow 2 NO_{3}^{-}$
Which of the following statements about these equations is not true?

The conversion of ammonia into nitrites and nitrates is called

Which two distinct microbial processes are responsible for the release of fixed nitrogen as dinitrogen gas $(N_2)$ to the atmosphere?

Write the nutrition method of nitrifying bacteria.