when the continents separated, Some of the same species ended up on different continenets this is due to what?

Pangea, it's when all of the continents were one and every living thing out of water lived on the same mainland then with the theory that the dinosaurs died due to a meteor that's why we find the fossils of one species of dinosaur in South America then the same species in Cape Hope, Africa. The same theory applies to everything that survived hence chimps in Amazon and chimps in Africa.

I hope this answers your question