Biogeography●The study of the distribution of species and ecosystemsin geographic space andthrough (geological) time. ●Biogeographical distribution supports the theory of evolution as it is found that closelyrelated species are usually found in close physical proximity to one another, and thatfossils from these regions resemble modern organisms. This suggests that thesespecies share a common lineage●Both geographical isolation and differing environmental pressures have resulted in diversification through natural selection.