Across
- 4. science that studies substances in food
- 6. round, colored part of the eye
- 8. doctor who treats skin disorders
- 10. thinner outer layer of the skin
Down
- 1. light rays pass through this
- 2. thicker outer layer of the skin
- 3. nonliving band of epidermis
- 5. substances in food that your body need
- 7. loudness of sound
- 9. hard material