photosynthesis

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Across
  1. 3. we drink it and we also need it to live
  2. 4. the control center of the cells
  3. 6. plants inhale it
  4. 8. you may put this in your tea or coffee
  5. 9. plants breathe it out
Down
  1. 1. it is how plants grow
  2. 2. scientists make sure they only change one variable in all experiments
  3. 5. it travels in a straight line
  4. 6. it is a green stain that comes from the grass
  5. 7. it causes heat in our body and it also has something to do with our breathing