Animals as a Living System
Across
- 2. How an animal acts
- 4. Line the intestine to give it more surface area
- 8. System responsible for gas exchanges
- 11. The variable that you change
- 13. System responsible for removing excess waste from the body
- 14. Gives an animal something positive
- 16. Gives an animal something negative
- 17. Gives an animal an outer shell of support and protection
Down
- 1. System responsible for transporting blood and nutrients
- 3. Receptors that use touch, taste, hearing, vision, and smell
- 5. The variable that changes because of something else
- 6. How the animal reacts to a stimulus
- 7. What the animal responds to
- 9. Gives an animal structure and support, minimal protection
- 10. The skin, eyes, tongue, nose, and ears are examples of this
- 12. The more you have, the more can be absorbed
- 15. System responsible for breaking down and absorbing nutrients