Examlex
The zero point of an interval scale reflects a complete absence of what is being measured.
Morphine
A potent opiate analgesic drug derived from the opium poppy used for pain relief.
Heroin
An opioid drug derived from morphine, highly addictive and illegal, commonly used for its euphoric effects.
REM Sleep
A stage of sleep characterized by rapid eye movements, during which the most vivid dreams occur, and is considered important for emotional regulation and memory consolidation.
Depression
A mental health condition characterized by persistent feelings of sadness, hopelessness, and a lack of interest or pleasure in activities.
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