Across
- 2. throat
- 5. bulk
- 8. hips to toes
- 10. connect
- 12. another one
- 13. entrance
- 17. brings waste
- 19. smoother
- 20. longtube
Down
- 1. fights
- 3. divides
- 4. important
- 6. hemoglobin
- 7. important
- 9. warm
- 11. thin
- 14. airsacs
- 15. hairlike
- 16. voicebox
- 18. two tubes