Across
- 1. the small particles of all things in the universe
- 3. group of cells working together
- 5. organ that does the inhalation and exhalation
- 7. the system made of blood, blood cells and the heart
- 13. system skin, nails and hair belong to this system
- 15. a living thing made up of one or more cells and able to carry on the activities of life
Down
- 2. the system that enable movement of the body
- 4. the place where more bones meet
- 6. the system that supports for the body
- 8. tissues working together
- 9. the molecule that carries genetic information
- 10. the pump in our bodies
- 11. contact and relax
- 12. the system that is helping you solve this puzzle
- 14. the system that exchanges CO2 and O2