| A | B |
|---|
| myth | false belief |
| sunscreen | lotion that blcoks the sun's rays |
| plaque | a clear sticky film that forms on teeth |
| cavity | a hole in teeth |
| fluoride | substance that helps teeth stay hard |
| cornea | clear cover that protects eye |
| iris | colored muscle around pupil |
| pupil | opening in the eye |
| lens | part of eye that bends light |
| retina | back of the eye |
| optic nerve | sensory nerve from eye to brain |
| astigmatism | cornea is shaped unevenly |
| cochlea | liquid filled coiled tube in ear |
| decibels | measure of volume |
