Across
- 3. this is in food
- 5. the heart is this
- 7. the system you need to live
- 9. a type of ray
- 10. lots of cells that make up something
- 11. a set of things working together
- 12. vessels that transport blood
- 13. one cells or lees
- 14. something in your body but is like veins
Down
- 1. the act of diffusing
- 2. proteins produced by blood
- 4. what you need to run
- 5. a main organ
- 6. a medical condition
- 8. more than one cell