Across
- 4. Fossil fuels are natural...
- 7. The theory that all living things evolved from a common ancestor
- 8. Behaviors that must be learned
- 10. The movement of genes through generations
- 11. The act of adapting to your environment
- 13. The differences in species
- 17. A random change in genes
- 19. Survival of the fittest
- 20. He developed the theory of evolution
Down
- 1. Migration is an ... behavior
- 2. Pretending to be someone/something else
- 3. Variation in genes that can stop reproduction
- 5. The opposite of natural selection
- 6. Bears do this
- 9. The adaption was...
- 12. Blending into an environment
- 14. An inherited characteristic
- 15. The opposite of prey
- 16. The official name for an animals child
- 18. The quality of being adapted