Answer:
There are two main ways nitrogen can become " fixed :" Fixation by lightning: The energy from lightning causes nitrogen (N 2) and water (H 2 O) to combine to form ammonia (NH 3) and nitrates (NO 3). Precipitation carries the ammonia and nitrates to the ground, where they can be assimilated by plants.
Explanation:
Answer:
1.used in organic forms performed by microbes 2.amonium can be used for plants to help them grow
Explanation: