Across
- 7. Building Block of DNA
- 8. Organelle that holds DNA
- 10. Scientific Family
- 11. Scientist who studied evolution and made many discoveries in the Galapagos
- 12. Organisms with the best __________ for the environment will survive and reproduce
- 13. When two family members in a zoo mate with each other. This is why zoos need to trade their animals
Down
- 1. Organelle that creates energy using sugar and oxygen
- 2. Sire
- 3. A tool/diagram that shows evolutionary relationships
- 4. Differences in living organisms in an environment
- 5. Damsel
- 6. Distant Relative
- 7. Theory of _________ Selection
- 9. A trait that helps an organism survive better in the environment