Answer:
Explanation:
They can adapte to fresh water but they can also look for the salt i think
The answer is D.
Melatonin is a molecule that is produced in the pineal gland and secreted into the blood. Melatonin then travels to different parts of the brain. It tells the brain and the rest of the body about the time of wake and sleep. It causes drowsiness and decreases body temperature to assist in the regulation of the sleep/wake cycle. The melatonin secretion into the blood is regulated by the endocrine system, by the hypothalamus which on gets stimulated by the light.
Answer:
The answer to your question is S Phase
Answer:
The change in frequency of an existing gene variant or allele in a population due to random organism sampling.
Explanation:
