Across
- 4. What humans breathe
- 8. the process which plants use sunlight to make food
- 9. Small opening on the plant leave
- 10. What humans breathe out
- 11. the green pigment that soaks up the sun energy
- 12. Where cellular respiration takes place
Down
- 1. All living things need this to survive
- 2. the sugar plants use
- 3. Where photosynthesis takes place
- 5. the reaction that cellular respiration is
- 6. Chemical energy harvested in the molecule called
- 7. photosynthesis happens in a organelle called