Why did Charles Darwin attach great importance to the role of heredity and variability in the historical

Why did Charles Darwin attach great importance to the role of heredity and variability in the historical development of the organic world?

Because he believed that evolution is based on natural selection, the struggle for survival. That is, the strongest survive and those who know how to adapt. The discrepancy between the possibility of species for unlimited reproduction and limited resources is the main reason for the struggle for existence.



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