Across
- 5. a structure that serves no real function but was useful to their ancestors
- 7. what type of bird did Darwin study
- 9. a bodily structure that has the same structure but is used for a different function
Down
- 1. shows how different species are related based on the similarities they share while in the embryo stage
- 2. a bodily structure what a different structure but the same function
- 3. what island chain did Darwin collect most of is information from
- 4. whatis the distinguishing part of the finches
- 6. Who's idea is that species have to compete with each other for food and resources?
- 8. an imprint in rock that shows when the animal existed
- 10. Who's idea was that species gained traits while they are alive?