Across
- 1. the process of transporting oxygen around the body (and removing CO2)
- 4. a cell that has a defined nucleus
- 7. any living thing
- 9. building block of life
- 11. a cell that does not have a defined nucleus
- 13. made of many cells
- 14. the system that maintains the bodies shape
- 15. the removal of waste
Down
- 2. one of the toughest multicellular organisms (it can survive boiling water and can be found everywhere)
- 3. a unicellular organism that can cause food poisioning
- 5. collection of tissue to form a structural unit
- 6. the process of breaking down food
- 8. the system that allows you to move
- 10. made of only one single cell
- 12. a group of cells that work together