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.
D
Punctuated equilibrium is a series of small, gradual changes over long periods of time.
The primary hormones involved in the functioning of the male reproductive system are follicle stimulating hormone (FSH),Luteinizing hormone (LH) and Testosterone.
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I believe the answer is "<span>A canyon can be cut by the flow of a river if it flows in one path for a long enough time". </span>
<span>Maria's mother is nrmal and does not display any sumptoms of rickets. maria's father, however, has the disease. mria marries a man that does not have the disease. what is the probability thaty they will have a son that has the disease?</span>
