photosynthesis

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Across
  1. 4. helps the roots grow
  2. 5. what gives us light during the day
  3. 9. what do we need to breath
  4. 11. to keep a plant alive
  5. 12. reflects off plants
  6. 13. we need to drink
  7. 15. variable that you changed
Down
  1. 1. used to see invisible ink
  2. 2. what do we breath out
  3. 3. travels sugars through the plant
  4. 6. gives us oxygen
  5. 7. how hot/cold is it
  6. 8. variable that you investigate
  7. 10. travels water through the plant
  8. 14. the plants openings