Examlex
Explain how scientists determined which plant nutrients are the essential nutrients.
Tranquilizers
Medications that are used to reduce tension and anxiety.
Sedatives
Substances or drugs that reduce excitement, irritability, or nervousness by inducing a calming effect on the central nervous system.
Opiates
A group of drugs derived from opium, used for pain relief, and can also induce sleep or euphoria.
Psychoactive Drugs
Drugs that act on the nervous system to alter consciousness, modify perception, and change moods.
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