A biological process which occurs when bacteria converts nitrogen gas (N₂) into a usable form for living organism is called: C. fixation.
What is fixation?
Fixation can be defined as a biological process which occurs when nitrogen gas (N₂) is converted by the bacteria found within the soil, into a usable form for living organism.
This ultimately implies that, a bacteria provide the essential nutrients for living organism such as green plants by converting nitrogen gas (N₂) into a usable form.
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