1. Is natural selection a
good theory?

2. A good theory:
• explains observed phenomenon
• makes predictions
• is (scientifically) testable

3. Explains observed phenomenon
cc licensed flickr photo by Horia Varlan: http://flickr.com/photos/horiavarlan/4273168957/

4. Makes predictions
cc licensed flickr photo by Horia Varlan: http://flickr.com/photos/horiavarlan/4273168957/

5. Is scientifically testable
cc licensed flickr photo by Horia Varlan: http://flickr.com/photos/horiavarlan/4273168957/

6. Your assignment:
“Is Natural Selection a Good Theory?”
• explain natural selection (two big ideas)
• does it meet the three criteria of a good theory?
(explain each one)