Why is bacteria a necessary part of the nitrogen cycle

Explanation:

denitrifying and nitrifying bacteria are used nitrogen cycle.

answer; atp and nadph;

when atoms of different types of elements join together, they make molecules called compounds. water consists of compound molecules made up of 2 hydrogen atoms and 1 oxygen atom. this is why it's called h2o. water will always have 2 times the number of hydrogen atoms as oxygen atoms.