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