| A | B |
|---|
| epidermis | the top layer of the skin |
| Plaque | a sticky material partly made up of bacteria that sticks to your teeth |
| pupil | the hole through which light enters the eye |
| posture | the way you hold your body |
| dermis | the thick bottom layer of the skin containing blood vessels and nerve |
| cavities | holes in the outer surface of the teeth |
| decay | rot |
| rot | decay |
| retina | the back part of the eye |
| fluoride | a mineral that helps prevent cavities |
| pores | openings in the skin through which sweat reches the skin's surface |
| sweat glands | glands that produce sweat |
| endurance | the ability to work hard for a long time |
| hearing loss | the inability to hear sounds that you were once able to hear |
