Thermal pollution is when the water temperature goes from one extreme to another whether cold to hot or hot to cold, so I would say B.
Answer:
Endocrine glands and their hormones
The major glands of the endocrine system are the hypothalamus, pituitary, thyroid, parathyroids, adrenals, pineal body, and the reproductive organs (ovaries and testes). The pancreas is also a part of this system; it has a role in hormone production as well as in digestion.
Explanation:
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If I am not mistaken, the answer is branch. For example a branch of the military is the U.S Navy.
Gene duplication, mutation, or other processes can produce new genes and alleles and increase genetic variation. New genetic variation can be created within generations in a population, so a population with rapid reproduction rates will probably have high genetic variation.