Darwin proposed a theory of natural selection
Darwin argued that species can evolve through time, that new species develop from older ones, and that all species descended from a single progenitor. According to this theory, every species has its own distinct set of heritable (genetic) differences from the common ancestor, which have been slowly accruing over very long time periods.
Charle's darwin theory of evolution by natural selection is the foundation upon which modern vocabulary theory is built.
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