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Which of the Following Is Not a Chemical

question 14

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Which of the following is not a chemical?


Definitions:

Delta Waves

Slow brainwaves primarily associated with deep sleep and the restorative stage of the sleep cycle.

Deep Sleep

Deep sleep, or slow-wave sleep, is a stage of sleep that is crucial for physical renewal, hormonal regulation, and growth.

REM Periods

Stages of sleep characterized by rapid eye movement, low muscle tone, and the propensity to dream.

Night

The period of darkness between sunset and sunrise during which there is a absence of visible sunlight.

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