1. Do Now – 12/5 What is the Fossil Record? What are some drawbacks to the fossil record?

3. This Day in History The first US Fraternity formed (1776) The Gold Rush started (1848) First electric car built (1893) Albert Einstein comes to America (1932) 21 st Amendment Ratified

5. Fossil Record

7. Biogeography Study of past and present geographical distribution of species – Continental Drift – Geographic Isolation

8. Geographic Isolation members of the same species can no longer mate due to geography, and the result is two isolated gene pools that evolve over time to become two separate species.

9. Continental Drift implies that as the super continent Pangea split to form separate continents, members of the same species were separated by water and over time became separate species.

10. Questions Did continental drift lead to geographic isolation? What are some other land features that could lead to geographic isolation?