Answer :
Answer:
Pineal gland and melatonin hormone.
Explanation:
The pineal gland is a small gland in the brain that secretes hormone melatonin which is responsible for regulating biological rhythms like sleep.
Answer:
Pineal gland and melatonin hormone.
Explanation:
The pineal gland is a small gland in the brain that secretes hormone melatonin which is responsible for regulating biological rhythms like sleep.