Across
- 2. used to transport oxygen from the lungs into the blood.
- 4. the substances the body uses to build, repair and maintain itself.
- 5. used by the body to build and maintain strong bones.
- 8. the study of food and how it works in your body.
Down
- 1. repairs damaged muscles.
- 3. the body uses these to protect its cells.
- 6. used to build your immune system to fight the corona virus.
- 7. this helps the body by pushing waste out of the body.