Answer:
gravity is your answer my friend
The brain's suprachiasmatic nucleus regulates the body's circadian rhythms. The suprachiasmatic nucleus is a minute region of the brain located in the hypothalamus above the optic chiasm, the circadian rhythm is the 24-hour cycle of organisms, related to sunlight and temperature.
They are both light resources.
mark brainly man.
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The answer is B , because your stress decreasing can not cause a disorder
