Each Year, 21

question 72

Multiple Choice

Each year, 21.7 million Americans move from one residence to another within the same state.This type of migration is known as

• A)immigration.
• B)emigration.
• C)internal migration.
• D)international.

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Definitions:

Insomnia

A sleep disorder characterized by difficulty falling asleep, staying asleep, or achieving restorative sleep, often leading to daytime sleepiness and functional impairment.

Temporary

Lasting for only a limited period of time; not permanent.

Dopamine Levels

Refers to the concentration of dopamine, a neurotransmitter that plays a major role in reward-motivated behavior and control of movement, within the brain's various systems.

Addictive Substance

A chemical that causes someone to develop a dependency, leading to compulsive use despite harmful consequences.