Across
- 3. Inherited trait that helps an organism survive & reproduce.
- 6. Preserved remains or evidence of an ancient organism
- 7. _?_ selection--organisms with favorable variations live, reproduce & Pass on their favorable traits
- 8. Members of a species are different from each other
Down
- 1. Scientists think that the first cells resembled modern prokaryotic _?_
- 2. Ability of an organism to survive & reproduce
- 4. Scientist who wrote Origin of the Species.
- 5. Change in a species over a long period of time