Answer: water, wind, volcanic rock, sand, and other stuff that can pile up basically.
Answer:
Nitrogen cycle
Explanation:
Nitrogen fixation is the process by which atmospheric nitrogen is converted by either a natural or an industrial means to a form of nitrogen such as ammonia. In nature, most nitrogen is harvested from the atmosphere by microorganisms to form ammonia, nitrites, and nitrates that can be used by plants.
The answer is B. Peer-reviewed journals.
Results that are peer-reviewed means that they have been checked by scientists who are also experts in the same fields. And that means that the results are reliable.
