Describe the external environment when melatonin levels are highest in the body in the 24-hour cycle

Dark and quiet, around 2-4AM

Explanation:

Melatonin is induced by darkness (i.e. when the sun goes down) but the levels reach a peak in the middle of the sleep cycle around 2-4AM, then begin to gradually fall.

a chain link fence because there so tiny even my albino donkey can't get out

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