Across
- 2. look similar but not
- 4. display of evolution
- 5. DNA in common= related
- 8. parts that are no longer used
- 10. sudden death of species
- 11. found in the ground
- 12. spread out on earth
Down
- 1. adapt to surroundings
- 3. species evolution
- 6. homologous structure
- 7. choice of mate
- 9. related species same embryo