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WordReference Random House Learner's Dictionary of American English © 2024ˈnat•u•ral seˈlec•tion, n. [uncountable]- Biologythe process in nature by which some forms of life that are best able to function or adapt to changes in climate, to competition for food or mates, etc., tend to survive, reproduce in greater numbers, and pass on their characteristics to later generations.
WordReference Random House Unabridged Dictionary of American English © 2024nat′ural selec′tion, - Biologythe process by which forms of life having traits that better enable them to adapt to specific environmental pressures, as predators, changes in climate, or competition for food or mates, will tend to survive and reproduce in greater numbers than others of their kind, thus ensuring the perpetuation of those favorable traits in succeeding generations. Cf. survival of the fittest.
Collins Concise English Dictionary © HarperCollins Publishers:: natural selection n - a process resulting in the survival of those individuals from a population of animals or plants that are best adapted to the prevailing environmental conditions. The survivors tend to produce more offspring than those less well adapted, so that the characteristics of the population change over time, thus accounting for the process of evolution
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