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The release of _______ from the pineal gland is important for establishing _______.

a. melatonin : thirst
b. prolactin : circadian rhythm
c. melatonin : circadian rhythm
d. prolactin : breast milk production
e. melanin : thirst

User Dave Kirby
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1 Answer

3 votes
I believe it is letter A
User Araneae
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