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During the last four decades, the composition of federal spending has
Reproductive Success
The passing on of genes to the next generation in a way that they too can pass on those genes.
Evolutionary Psychologists
Researchers who study how evolutionary principles like natural selection influence human thoughts, feelings, and behaviors.
Natural Selection
The evolutionary process by which organisms better adapted to their environment tend to survive and produce more offspring.
Charles Darwin
A 19th-century naturalist best known for his contributions to the science of evolution and the theory of natural selection.
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