Photosynthesis Puzzle

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Across
  1. 3. organelle turns sugar into usable energy
  2. 6. turn sunlight into sugar
  3. 8. one of the sweet outputs of photosynthesis
  4. 9. type of cells to do photosynthesis
Down
  1. 1. variable the scientist changes
  2. 2. where photosynthesis occurs
  3. 4. variable the scientist measures
  4. 5. the gas plants take in
  5. 7. the gas plants release