The Respiratory System
Across
- 2. When we breathe,we take in ...
- 4. Breathing is the process of taking in ... into our body and giving it out again.
- 5. Insect breathe through their ...
- 6. The air we breathe out is called ...
- 7. Earthwors breathe through their
- 8. Fish breathe through their ...
- 10. Respiratory is the process in which our cells use oxygen and sugar to produce carbon dioxide,water,and ...
Down
- 1. When we breathe out,our ribcage moves ...
- 3. The space in our chest to became bigger,when we ...
- 9. One of the main organs of the human respiratory system is ...