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evidence for evolution: biogeography
studying the distribution of organisms around the world is known as biogeography. initially, the continents of the world were joined together in a supercontinent known as pangea. 200 million years ago, it split, first into two continents - gondwana and laurasia - then into the continents we have today. species that evolved before pangea split have left fossils across todays continents. species that evolved since the split, are more localized, e.g. koalas are native to australia. the presence of unique species in smaller or isolated areas indicates evolution has occurred. closely related species are often found in the same geographical areas, supporting the theory of evolution from a common ancestor.
summarize how biogeography provides evidence for evolution
Biogeography studies organism distribution. Fossils of pre - Pangea split species are widespread. Post - split species are more localized. Unique species in isolated areas and related species in the same area support evolution from a common ancestor.
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Biogeography provides evidence for evolution by showing that fossils of species that evolved before Pangea split are found across different continents today, while species that evolved after the split are more localized. The presence of unique species in smaller or isolated areas and closely related species in the same geographical areas supports the idea of evolution from a common ancestor.