Across
- 4. chemical that can speed up chemical reaction
- 7. process that food turned to energy
- 8. respiration process that doesn't has oxygen and occur for short time
- 10. breathing out
- 11. breathing in
- 12. how gas exchanged in alveolus
- 13. blood that has low oxygen concentrate and high carbon dioxide
- 14. inorganic substances that required by body in small amount
- 15. thing that aerobic respiration need and it come from digestive system
- 16. where food travel down from mouth to stomach
- 19. respiration process that energy release while oxygen occur
Down
- 1. happen when you get vitamin b1 deficiency
- 2. blood that has high concentrate of oxygen
- 3. organic substances that required by body to carry out important chemical reaction
- 5. where respiration happen in organelle
- 6. part of body where has breathing system
- 9. muscle contraction occur along length of digestive system
- 17. covered with blood vessels and where gas exchanged happen
- 18. happen when you get vitamin D deficiency
- 20. connect lungs to trachea