Crossword

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Across
  1. 1. can be used again
  2. 6. act as a link in communication
  3. 8. a bacteria used to make bread
  4. 10. necessary
  5. 13. can not be argued
  6. 14. make larger
  7. 15. the act of trying something new
Down
  1. 2. very positive
  2. 3. unsophisticated
  3. 4. causing disease
  4. 5. to do with medicine
  5. 7. a chemical
  6. 9. a gift taken from holidays
  7. 11. a system of government
  8. 12. not having opinions