BRAINCAKETheory of Evolution
Evolution is a theory that describes the way in which organisms change over time as a result of natural selection.
Organisms best suited to their environment are more likely to survive and reproduce, passing their characteristic to their offspring. Gradually species change over time to have a more advantageous genotypes for the environment in which it lives.
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More in Classification and Evolution
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All 36 lessons in Classification and Evolution · All OCR AS-level Biology topics