Across
- 5. Mechanism for descent with modification.
- 7. each living thing descended from other species.
- 8. fittest survive.
- 9. The remains or traces of an organism that died long ago.
- 10. new types of organisms from preexisting types of organisms.
- 11. measure an individual's contribution to the next generation.
- 12. resemble miniatuare legs, tails, and other things.
Down
- 1. A trait that makes an individual successful in its environment.
- 2. compitition.
- 3. Anatomical structures occur in different species.
- 4. choosing to breed things together.
- 6. everything came from a comon ancestry.