Less people and THE END OF THE WORLD
The correct answer is 2. By a feedback loop.
Hormone levels in the body is regulated by negative feedback mechanism. In this mechanism, a stimulus stimulates the release of a substances. After the effect of that substance its further release is inhibited. This can be understood by an example, the anterior pituitary gland stimulate the thyroid gland to release thyroxin and on increasing the thyroxin in the blood, feedback the hypothalamus and anterior pituitary to inhibit further release of thyroxin from thyroid gland.
C., or disruptive selection. This occurs when the extremes of a trait are selected for, leading to more organisms with those phenotypes in the population.
Answer:
Schwann cells
Explanation:
The Schwann cell is a type of glial cell that envelops the axon of neurons in the peripheral nervous system (PNS). Each axon is surrounded along its path by many of these glial cells to form the myelin sheath arround pns axons. One of the main tasks of this type of cells is to act as a support and guide in the processes of regeneration of the peripheral nervous system.