Science Crossword

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