The document provides evidence for evolution through natural selection by discussing several key topics: 1. It outlines Charles Darwin's voyage on the HMS Beagle where he made detailed observations of organisms and fossils that led him to develop his theory of evolution by natural selection. 2. It describes key evidence that supports evolution such as the fossil record, comparative anatomy, biochemistry, and embryology that show life has changed over billions of years from common ancestors. 3. It discusses the development of early humans from australopithecines like Lucy to later hominins like Homo habilis, Homo erectus, Neanderthals, and Cro-Magnons, showing the evolution of biped

1. Evidence of Change Evolution

7. Natural Selection and Speciation

10. The Voyage of the Beagle: Ports of Call Noted that populations of organisms were slightly different from place to place Each group was modified to their specific environment

11. The Galapagos Archipelago

12. Land Iguana Marine Iguana The Galapagos Iguanas

13. The Galapagos Tortoises

14. The Galapagos Tortoises

15. The Galapagos Finches

16. The Galapagos Finches The Origin of Species Interactive Exploration

17. Charles Lyell Darwin Pieces Together the Puzzle Author of “ Principles of Geology” This book helped Darwin realize that the earth is old and changes slowly over time.

22. Darwin’s View of Evolution Darwin Pieces Together the Puzzle Those giraffes with longer necks got more food and were better able to survive to reproduce, passing on the long-neck genes to their offspring. Over time, giraffes evolved longer necks.

23. “ Of course, long before you mature, most of you will be eaten.” 4 Key Ideas of Natural Selection

27. Darwin Today… Natural Selection in action … causes a frequency of certain alleles in a population to increase or decrease over time!

31. Speciation results in Biodiversity

38. Behavioral Isolation

42. Two populations live in different habitats and mating occurs in those habitats, thus their own gene pool. Land Iguana Marine Iguana Ecological Isolation

45. Evolution Evidence to Support Evolution

49. Miller-Urey Apparatus Evidence to Support Evolution

55. Direct Evidence of Evolution

62. Relative Dating of Fossils

67. Carbon-14 Dating - Determines the age of fossils of a biological origin up to approx. 50,000 years old. - used in dating things such as bone, cloth, wood, plant fibers, etc. 5,700 year is C 14 half-life

69. Half-life of carbon-14 is 5730 years

70. Half-life of carbon-14 is 5730 years 22,920 11,460 28,650 17,190

71. Radiometric Dating Evidence to Support Evolution Radioactive Parent Stable Daughter Half life Potassium 40 Argon 40 1.25 billion yrs Rubidium 87 Strontium 87 48.8 billion yrs Thorium 232 Lead 208 14 billion years Uranium 235 Lead 207 704 million years Uranium 238 Lead 206 4.47 billion years Carbon 14 Nitrogen 14 5730 years

82. Human Evolution