Across
- 4. Discovered oxygen
- 5. baby frogs
- 7. Human respiratory organ
- 8. The process of breathing out air
- 9. Helps in exchange of gases in plants
- 10. respiratory organs of the fish
Down
- 1. The process of breathing in air
- 2. helps you be fit
- 3. the process by which air goes in and out of body
- 6. respiratory organ of the frog