Final answer:
Charles Darwin and Alfred Wallace independently discovered the concept of natural selection, which explains how species evolve over time through advantageous traits.
Explanation:
Charles Darwin and Alfred Wallace independently discovered the concept of natural selection. This mechanism explains how species change over time, with individuals best suited to their environment surviving and reproducing at higher rates, passing on their advantageous traits. Darwin's theory of evolution by natural selection emphasizes the role of variation, competition for limited resources, and the inheritance of adaptive traits leading to the adaptation of populations to their environments.
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