Across
- 2. a substance that takes part in undergoes
- 6. the thing plants require to make air
- 8. the basic unit of a chemical element
- 9. a double membrane
- 10. the process
Down
- 1. a process of energy
- 3. The green cell in plants
- 4. The air we produce
- 5. the energy
- 7. a green pigment in plants
- 9. a group of atoms binded together
- 11. the air plants produce