1. History of Life on Earth

3. Precambrian Eon Comprises the majority of Earth’s history
Oldest fossils
Origin of eukaryotes (endosymbiotic theory)
Heterotrophic eukaryotes evolved from taking in heterotrophic prokaryotes that functioned as mitochondria
Autotrophic eukaryotes evolved from taking in autotrophic and heterotrophic prokaryotes

4. Precambrian Eon

5. Endosymbiotic Theory

6. Paleozoic Era
Cambrian explosion
3 major extinctions
Pangea formed

7. Mesozoic Era Evolution of dinosaurs Appearance of birds
2 major extinctions

8. Cenozoic Era
Primates evolved