Across
- 2. in air
- 3. a source
- 4. arguing
- 7. a argument about science
- 10. type of food
- 12. like atoms
- 13. a process
- 14. helps growth
- 17. transports oxygen
Down
- 1. a reaction
- 3. a fact
- 5. molecules building blocks of proteins carbondioxide molecule
- 6. process of food
- 8. chemical reaction through oxygen
- 9. body system
- 11. a reason
- 15. molecule releases energy
- 16. storage molecule