natural selection Meaning in the Cambridge English Dictionary
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Meaning of “natural selection” in the English Dictionary

"natural selection" in British English

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natural selectionnoun [U]

uk   us  
the ​process that ​results in the ​continuedexistence of only the ​types of ​animals and ​plants that are ​bestable to ​produceyoung or new ​plants in the ​conditions in which they ​live
(Definition of natural selection from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"natural selection" in American English

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natural selectionnoun [U]

 us   /ˈnætʃ·ər·əl siˈlek·ʃən/
biology the ​theory that ​organisms with characteristics that ​allow them to ​livesuccessfully in a ​particularenvironment will ​reproduceorganisms with the same characteristics
(Definition of natural selection from the Cambridge Academic Content Dictionary © Cambridge University Press)
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