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The production possibilities frontier slopes downward and to the right because of limited resources.
Fitness
Refers to the condition of being physically fit and healthy, often involving exercise and nutrition.
Charles Darwin
A 19th-century biologist known for developing the theory of natural selection, which is a cornerstone of modern evolutionary studies.
Evolution
A method through which various types of organisms are believed to have evolved and varied from their ancestors throughout Earth's history.
Natural Selection
A mechanism of evolution where organisms better adapted to their environment tend to survive and reproduce more offspring.
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