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How does the pineal gland regulate sleep?by regulating the thyroid gland by secreting melatonin by producing calcium by stimulating the pituitary gland?

User SaadK
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Answer:

Secreting Melatonin

Step-by-step explanation:

User Winsmith
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Answer: Secreting Melatonin

Step-by-step explanation:

User Dezzley
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