Which hormone plays a key role in adjusting the day-night cycle?
A) melatonin
B) adrenalin
C) androgen
D) thyroxine

Name: Which hormone plays a key role in adjusting the day-night cycle? A) melatonin B) adrenalin C) androgen D) thyroxine
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Question

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Melatonin is a hormone that is primarily responsible for regulating the circadian rhythm, or day-night cycle, of our bodies. It is produced by the pineal gland in response to low light levels and helps to promote sleep at night.

Which Hormone Plays a Key Role in Adjusting the Day-Night