Across
- 1. A trait that increases an organism's chance for survival
- 4. Passenger Pigeon, Carolina Parakeet, Dodo Bird, Dinosaurs
- 7. When two species use the same resource to survive and must split the resource
- 8. The process of "choosing" which animal is most fit to survive
- 9. When two species evolve because of changes in one another
- 10. Short for genetic
- 12. Being able to survive even with changing factors
- 13. The measure of how well an organism can survive
Down
- 2. Opposite of natural selection; when humans choose themselves whose genes will pass on
- 3. The name for one species splitting into two
- 5. A species getting separated, making the two gene pools different
- 6. A change in genetics that makes an organism different
- 11. Change over time