Across
- 4. The process of removing waste from the body.
- 5. The system responsible for providing nutrients to the body.
- 6. The system that regulates body temperature and protects tissues.
- 7. The survival need that is the most abundant substance in the body.
- 9. Feedback mechanism that amplifies the original change.
Down
- 1. The system that includes bones and supports body movement.
- 2. A survival need; essential gas for cellular respiration.
- 3. The body's ability to maintain a stable internal environment.
- 8. Feedback mechanism that reverses a change in a controlled condition.