Across
- 2. returns fluid to blood
- 4. skin,hair,nails mostly
- 7. large and small intestine,bladder,etc
- 9. responds to internal and external change
- 11. eliminate nitrogenous wastes
Down
- 1. maintains posture
- 3. a way to trasport material around the body
- 5. bones,cartilage,joints
- 6. produces offspring
- 8. supplies oxygen with blood
- 10. secretes regulatory hormones