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Free-floating, photosynthetic, unicellular protists include:
Psychological Disorders
Mental disorders characterized by disturbances in thought, emotion, or behavior, significantly impairing personal functioning.
Religiously Involved
Participating in or committed to religious practices or institutions with regularity and devotion.
Pineal Gland
A small endocrine gland in the brain that produces melatonin, a hormone that regulates sleep-wake cycles.
Melatonin
A hormone produced by the pineal gland that regulates sleep and wakefulness.
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