Across
- 3. Respiration - using oxygen to release the energy in food
- 4. Dioxide - gas necessary for photosynthesis and made by respiration or burning
- 6. - tiny part inside a cell
- 8. - an organism that makes its own food
- 13. - how plants make food from sunlight
Down
- 1. - part of the cell that absorbs sunlight and carries out photosynthesis
- 2. - green chemical that absorbs sunlight
- 5. - an organism that makes its own food
- 7. - type of sugar
- 9. - gas made by photosynthesis and necessary for respiration
- 10. - to put together
- 11. - light
- 12. energy - what plants use to create food