Nitrogen fixation, the process of making nitrogen usable for living things, happen most in

A) bacteria

B)Plants

C)The ocean

D)Consumers

The nitrogen gas must be changed to a form called nitrates, which plants can absorb through their roots. The process of changing nitrogen gas to nitrates is called nitrogen fixation. It is carried out by nitrogen-fixing bacteria. The bacteria live in soil and roots of legumes, such as peas.

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c: warm water flows from the western tropical pacific toward south america. that should be the right answer! hope it .