Science Spelling

1. wind
2. oxygen
3. carbon dioxide
4. water vapour
5. nitrogen
6. windpipe
7. air sacs
8. gills
9. nostrils
10. blowholes
11. stomata
12. underside
13. photosynthesis
14. breathing holes
15. lungs
16. heart
17. blood
18. water
19. digested food
20. arteries
21. capillaries