Across
- 4. strengthens your teeth & bones
- 6. alive, some helpful, microscopic
- 8. when you expel hundreds of little globs of mucus and snot
- 9. any size symbiotic or parasitic
- 11. when you don't brush your teeth enough you might get these
- 14. what bacteria use on your teeth
- 15. a set of teeth you get when you are 16
- 16. what bacteria on your teeth feed on
Down
- 1. 2.5 drink on the pH scale
- 2. what you do to keep fit
- 3. a chemical that helps your teeth
- 5. important to keep away disease
- 7. when you clear your throat, you do it into your elbow
- 10. the front four teeth in your mouth
- 12. outside layer of your teeth
- 13. not alive, always pathogens