Across
- 2. proposed the theory of evolution by natural selection
- 3. variety of living things
- 5. change over time
- 7. required for a new species to form
- 9. structures that are similar
- 10. preserved remains of ancient organisms
Down
- 1. had different shaped beaks depending on the island that they are from
- 4. formation of new species
- 6. the ship which Darwin traveled on
- 8. a characteristic that helps the organism to survive