Today, More Than _____ of the World's Population Lives in Countries

question 79

Multiple Choice

Today, more than _____ of the world's population lives in countries poorer than the United States was a century ago.

• A) one-fifth
• B) one-third
• C) one-half
• D) two-fifths

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Definitions:

Internal Stimuli

Signals or events that originate within an organism, triggering psychological or physiological responses.

Consciousness

The state of being aware of and able to think about one's own existence, sensations, thoughts, and environment.

Circadian Rhythm

The biological clock that cycles daily, regulating physiological and behavioral processes such as sleep-wake patterns and hormone release.

24-Hour Cycle

Refers to the circadian rhythm, an internal biological clock that regulates the sleep-wake cycle and other physiological processes within a 24-hour period.