1. 10.1 KEY CONCEPT There were theories of biological and geologic change before Darwin.

3. Early scientists proposed ideas about evolution Evolution = biological change-- process by which descendants come to differ from their ancestorsEvolution = biological change-- process by which descendants come to differ from their ancestors Species = a group of organisms that can reproduce and have fertile offspringSpecies = a group of organisms that can reproduce and have fertile offspring

4. Many important naturalists in the 18th century! Oh Yeah!! classification system from kingdom to species Species shared common ancestors rather than arising separately More complex forms developed from less complex Envtal. changes lead to use or disuse of structure

5. Theories of geologic change set the stage for Darwin’s theory!! Let’s check these theories out!!!

6. –Volcanoes, floods, earthquakes –thought to cause mass extinction!!

7. Change occurred by small steps over time!!!

8. Geological processes (still occurring), add up to cause change!! Prevailing theory today!!!

11. Opener, Wed., Nov. 16 th Watch the video, write down your observations!! http://www.arkive.org/ground-pangolin/smutsia- temminckii/video-00.htmlhttp://www.arkive.org/ground-pangolin/smutsia- temminckii/video-00.html

13. 10.2 KEY CONCEPT Darwin’s voyage provided insight on evolution.

14. Hmm...Darwin observed differences among island species. difference in a physical trait. Live in areas w/ tall plants = long necks/legs! (short plants  short neck/legs!) Live in areas w/ certain foods = different beaks

16. feature that allows organism to better survive in its environment. -Species are able to adapt to their environment. -Adaptations can lead to genetic change in a population.

17. Fossils of extinct animals that resemble modern animals Darwin found fossil shells high up in the Andes mountains!Darwin found fossil shells high up in the Andes mountains!

18. saw land move from underwater to above sea level due to an earthquake!!!saw land move from underwater to above sea level due to an earthquake!!! extended his observations to the evolution of organisms!extended his observations to the evolution of organisms! Darwin’s observations made people think, and still DOES!!

19. Quick review!!! What is evolution?What is evolution? Define a species!Define a species! What was Darwin’s theory?What was Darwin’s theory? What did Linneaus come up with that we still use?What did Linneaus come up with that we still use? What was Lamarck’s take on evolution?What was Lamarck’s take on evolution? What did Buffon think was really going on?What did Buffon think was really going on? What are the 3 theories of geologic change?What are the 3 theories of geologic change? Which one’s the most supported today?Which one’s the most supported today? Give an example of variation among species that Darwin observed and why this occurred!!!Give an example of variation among species that Darwin observed and why this occurred!!! What is an adaptation and how do SPECIES (not individuals!!) seem to adapt?What is an adaptation and how do SPECIES (not individuals!!) seem to adapt?

20. Let’s explore EVOLUTION!! Let’s explore EVOLUTION!! http://www.pbs.org/wgbh/nova/evolut ion/darwins-predictions.html http://www.pbs.org/wgbh/nova/evolut ion/darwins-predictions.html