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What is the fundamental idea behind natural selection?
Psychological Effects
The impacts or changes in an individual's mental state, emotions, or behavior as a result of an experience, condition, or external stimulus.
Urban Environment
A geographical area characterized by high human population density and vast human-built features in comparison to areas surrounding it.
Federal Statutes
Laws enacted by the national government of the United States that apply across the country.
Valid Treaties
Legally binding agreements between countries that are recognized and enforceable under international law.
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