Old and new species 2.5 / 5 based on 2 ratings ? ScienceAdaptionGCSEAQA Created by: Nyle PatelCreated on: 22-05-13 18:22 What are fossils Remains of organisms from many years ago which are found in rocks 1 of 6 what can we learn from fossils How different organisms have changed as life developed on earth 2 of 6 What causes extinction new diseases, new predators, new competitors, natural changes, catastrophic event 3 of 6 What is extinction Species which once existed that has now completely died out 4 of 6 How do new species arise When two populations become isolated 5 of 6 When does speciation occur When populations become so different that they cannot interbreed 6 of 6
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