2. Formation of Earth

3. The Moon

4. Continents Form

5. Prokaryotes  First signs of life  Bacteria – single cell

6. Rise in Oxygen  Why was this important? What was able to form now that we had oxygen?  More complex life!

7. Eukaryotes  More complex than prokaryotes, still very small

8. Jellyfish

9. Jawed Fish

10. Land Plants

11. Amphibians

12. First Sharks  Sharks have changed very little

13. First Insects  Much bigger than today

14. Mass extinction  86% of everything died out  Not sure what happened  Some theories include: volcanoes and impacts

15. Dinosaurs  Ruled for 175 million years

16. Mammals  Very small, why?

17. Extinction of the Dinosaurs  Why did they go extinct?  What did this mean for mammals?

18. Eohippus  Larger mammals take over

19. Apes

20. Homo Sapiens  Only 100,000 years