Respiration Crossword!

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Across
  1. 5. What we breath out
  2. 8. The chemical signature of carbon dioxide
Down
  1. 1. Movement-Respiration...
  2. 2. a consequence of something happening
  3. 3. E.G. sulphur
  4. 4. What we need to breath
  5. 6. One type of respiration
  6. 7. The chemical signature of oxygen