Ch 17 crossword

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Across
  1. 2. Without defined shape or borders
  2. 3. WBC
  3. 4. Without cells
  4. 8. Tartar
  5. 9. Building blocks for structures
  6. 10. Prevents hardening of saliva
Down
  1. 1. Too much of solutes in solvent
  2. 5. Tooth mineral
  3. 6. Lives without oxygen
  4. 7. Main component
  5. 11. Needing oxygen for survival