8. What does the saliva do to the food?
9. How can you prove that saliva turns starch into sugar?
10. What happens if the food is not chewed and mixed with the saliva?
11. What comes next to the chewing?
12. What is there wonderful about swallowing?
13. What must you be careful about, when you are swallowing?
14. What happens to the food after it is swallowed?
15. How is it changed in the stomach?
16. What carries the food to every part of the body?
17. How can food mend a bone?