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How was the theory of evolution developed? - OCR 21st CenturyAudio

Genetic variation, as well as changes in the environment, cause characteristics of organisms to change over time. This process of natural selection leads to the evolution of new species.

Part ofCombined ScienceLife on Earth - Past, present and future

Explore what evolution is and the four key stages of the process of natural selection. Listen to the full series on BBC Sounds.

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How was the theory of evolution developed? - OCR 21st Century

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