Across
- 5. Breaks down food
- 6. returns fluids to blood vessels
- 7. Removes carbon dioxide
- 9. Forms the external body covering
- 11. Protects and supports body organs
Down
- 1. Secretes Regulatory hormones
- 2. Allows locomotion in the body
- 3. Water electrolytes
- 4. system Production of offspring
- 8. Transports materials in body
- 10. Responds to internal and external change