Crossword

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Across
  1. 3. the chemical that takes glucose out of the blood
  2. 4. the most severe form of cancer
  3. 6. causes allergic reactions
  4. 7. this thing in cigarettes causes cancer
Down
  1. 1. factor of environment that causes cancer
  2. 2. when your pancreas doesn’t produce enough insulin
  3. 5. when your airways are swollen