Across
- 3. what we inhale
- 4. created by the kidneys
- 9. bacterial infection in the lungs
- 10. Breathing - takes place in the lungs
Down
- 1. what we exhale
- 2. System of air exhange
- 5. filter the blood
- 6. body system gets rid of liquid gaseous waste
- 7. moves air in and out of the lungs
- 8. where urine is stored