Across
- 4. growth
- 5. maintains posture
- 8. forms external body covering
- 9. removes carbon dioxide
- 10. breaks down food
- 12. need this to live
- 14. fast acting control system
Down
- 1. holds urine
- 2. transports materials in body via blood pumped by heart
- 3. produces offspring
- 6. eliminates nitrogenous
- 7. returns fluids to blood vessels
- 11. stores minerals
- 13. produces sperm
- 15. female reproductive system