Across
- 3. mammal digestion occurs in the mouth, stomach and
- 5. the tubes we need and use
- 7. food molecule that results from digestion
- 10. breaking food apart to extract energy
- 11. necessary to release food energy
Down
- 1. Dem bones, like ours
- 2. process that includes gas exchange
- 4. Animals must move to obtain it
- 6. removal of wastes form an organism
- 8. movement of molecules
- 9. the pump in this system