Biogeography is the study of the distribution of species, it mix biology, geography and history, because it aims to reveal the place where they are, at what abundance and why they are and not in another place.
This dispersion of species is created by the evolution that make that one species can live in one place and anothers in other places. The evolution adapt species to live in one place or in other. This is the relationship between evolution and Biogeography.
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