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The Köppen system of climatic classification ________.
Hormones
Chemical messengers secreted by glands in the body, responsible for regulating physiological processes including growth, metabolism, and mood.
Endorphins
Natural chemicals produced in the brain that interact with opioid receptors to reduce perception of pain and boost feelings of pleasure or contentment.
Hallucinogenic Drugs
Psychoactive substances that cause alterations in perception, mood, consciousness, and cognition, often inducing experiences disconnected from reality.
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