Across
- 5. system that deals with protection on the outside
- 7. system that produces hormones and regulates blood pressure
- 9. control center of the body
- 12. organism that only has one cell
Down
- 1. system that transports materials necessary for the body to function
- 2. system that works with the skeletal to move
- 3. succession that takes place with no soil
- 4. system that breaks down food
- 6. system that takes in O2 and releases CO2
- 8. system that supports the body
- 10. succession that takes place with little soil
- 11. system that filters waste and excess fluids form your blood