Examlex
Which of the following is required for natural selection to occur in a population?
Night Terrors
A sleep disorder causing feelings of panic or dread, typically occurring during non-REM sleep stages and resulting in loud screams or movements.
Cause
A reason or motivation for an action or event.
Suffer
To experience or be subjected to something bad or unpleasant.
Cultural Differences
The variations in the ways of life, beliefs, norms, and behaviors among different groups of people or societies.
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