1. Ch. 26

2. Part 1: Haedon Eon

3. 13.7bya: Universe 4.6bya: Earth

4. ~10 million species inhabit Earth today

6. 4.6bya: Geologic/Atmospheric Conditions No Water No Oxygen No Fun

7. 3.9 – 3.5bya: Simple life formed Prokaryote Genetic Material Cell Metabolism Replication But How?

8. Miller-Urey Experiment Simulate early Earth Amino acids formed http://www.youtube.com/watch?v=iahBQolXQH8

9. John Sutherland Experiment Simulate early Earth Nucleic acids formed http://www.pbs.org/wgbh/nova/evolution/origins-life.html

10. Liposomes: Lipids form a bilayer in water (cell) Protobionts: Enzymes break down glucose (energy) Divide in response to osmosis (reproduction)

11. http://www.youtube.com/watch?v=dySwrhMQdX4

12. RNA became awesome at: Surviving Reproducing (self replicating) Mutating

13. Part 2: Archean eon through Cambrian Period

14. ~3.5bya: Stromatolites (Cyanobacteria) Produced Oxygen

16. ~2.1bya: Complex cells with organelles But How?

17. Prokaryotic mitochondria & plastids were engulfed DNA (small, circular chromosome) Double membrane http://highered.mcgraw-hill.com/sites/9834092339/student_view0/chapter4/animation_-_endosymbiosis.html

18. ~1.5bya: Protists

20. ~530mya: Cambrian Explosion

21. http://www.youtube.com/watch?v=3uK1BGkd2Qg

22. Part 3: Ordovician Period through Quaternary Period

25. ~450 mya: Ordovician Extinction 90% of all species died Major glacial event

26. ~475-400mya: Land Plants, Fungi, & Insects ~375mya: Tiktaalik 1 st terrestrial tetrapod Amphibians & Reptiles

27. ~250mya: The Great Dying 96% of all species died Asteroids & Volcanoes

28. ~200mya: Mammals & Dinosaurs ~150mya: Birds

29. ~65mya: K/T Extinction 75% of all species died Giant asteroid slammed into Mexico

32. TODAY!!! Up to 140,000 species go extinct each year Habitat Destruction, Hunting, Pollution…

34. Earth will be hit by another asteroid in the future! 99942 Apophis 2036?

35. The diversity of life today is a result of evolution through natural selection over the course of 3.5by.

36. What does that mean?

37. http://www.youtube.com/watch?v=S_NPj55hcXQ