1. Evolution Change over time; the process by which modern organisms have descended from ancient organisms

2. Evolution Only a theory?

3. Some basic definitions Theory: a well- substantiated and accepted explanation that incorporates facts, laws, inferences, and tested hypotheses. In science, you don’t get any better than a theory.

4. Spontaneous Generation- life produced from non-life Biogenesis-life arises only from life According to Jean van Helmont from the 3 rd century B.C., when grains of wheat are place in a container and left for 21 days, mice will form from the fermenting wheat. False

6. Animal Locomotion What different ways do these animals move? What traits does each animal have that help it move as it does?

7. Darwin’s Voyage Charles Darwin – “The Father of the Theory of Evolution”

8. H.M.S. Beagle Sailed around the world in 1831 Darwin began to make observations about the species in the world

9. Darwin’s Observations An enormous number of species inhabit the earth Organisms are well suited to their environment Organisms have many ways to survive and produce offspring

10. Where Organisms Live Certain organisms live in some areas but not others –Rabbits and Kangaroos live in the same type of environment –Australia has Naturally Kangaroos but not Rabbits –England has Rabbits but not Kangaroos

11. Fossils Some fossils look like organisms that are alive today Other fossils look unlike any creature Darwin had ever seen Why do species disappear? How are organisms in fossils related to living species?

12. Galapagos Island Islands are close together with very different climates Darwin saw finches with different shaped beaks on different islands Could similar organisms on different islands once have been members of the same species? Fruit CactusSeeds Insects

13. Giant Tortoise