Across
- 3. respiratory system, digestive,
- 4. What system makes you breathe
- 6. ____ in and CO2 out
- 7. Cells These cells are specialized for contraction
Down
- 1. what do you need to take in science?
- 2. After you chew your food where does it go
- 4. What colour cell transports oxygen
- 5. Bronchi and ____