1. The History of Life on Earth and its driving force:

3. Some actual scientific theories on the beginning of life on earth.

5. In 1658 Francisco Redi’s experiment on flies disproves spontaneous generation.

6. 1862 Louis Pastuer’s broth and bacteria experiment also disproves spontaneous generation.

8. Early earth was a harsh environment. CO 2 ,N,SO 2 ,H 2 S,NH 3 ,CH 4

16. Loricifera.

21. Father of modern Geology Sir Charles Lyell (1797-1875) Explain his law of uniformitarianism to your table partner and provide an example?

23. Tree rings can identify absolute dates based on their annual growth of tissues.

26. Using relative and absolute dating methods, paleontologists have created a geologic time scale from the layers of sedimentary rock.

27. Relative Dating of rock layers and fossils/environments: Which rocks and fossils are the oldest? Why?

28. Geologic Time Scale

29. As you examine the geologic time scale note the key events, simple to complex progression of life, mass extinctions, and humans position relative to other life forms.

32. Population: A group of organisms of the same species within a given area.

33. Six different points of evidence for evolution

35. Fossil environments

41. Picture

43. Picture

45. 3 week old human embryo

46. Yes, you looked like this! Yikes! Human embryo 4.5 weeks

47. Note tail and gill slits in human embryo at 5 + weeks

51. Example of Lamark’s idea of acquired characteristics in Giraffes

52. 1889 August Weisman cut the tails off of hundreds of mice for 22 generations to disprove Lamark. OUCH!

53. 1844 Darwin and Wallace formulated the theory of natural selection as the driving force for evolution.

55. Where do you think most of the variation for a population originates?

56. While it is true that mutations account for variation most variations come from existing combinations of alleles. (remember them?)

64. Isolation forms new species

65. The Environment drives the change.

66. Divergent evolution: Isolated populations evolve independently

67. Adaptive Radiation: Multiple branching of a family tree, new environments may have many available niches.

68. Convergent Evolution: Different Types of Organisms Evolve Similar Characteristics.

69. Convergent evolution in marine life 