Photosynthesis

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Across
  1. 4. green plants and other organisms transform light energy into chemical energy
  2. 5. a sugar made during photosynthesis
  3. 7. dioxide colourless, odourless gas produced by burning carbon and organic compounds
Down
  1. 1. needs warm but cold weather to work
  2. 2. the steps in photosynthesis is used to make sugar
  3. 3. photosynthesis needs water and...
  4. 6. tiny openings or pores that enable gaseous exchange