Across
- 8. small changes
- 10. ability to get the best possible mate
Down
- 1. similar in function different evolutionary origin
- 2. no longer exists
- 3. 2 species evolve in response to changes in each other
- 4. young organism developing from zygote
- 5. how well an organism can survive and reproduce
- 6. preserved remains of organisms
- 7. similar in structure & supports common ancestry
- 9. change over time