Ch 17 Pt 2

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Across
  1. 3. Not made of cells.
  2. 5. The base or starting structure where something grows or develops.
  3. 8. A liquid that holds more of something than it normally can.
  4. 9. A chemical in saliva that helps prevent tartar from forming on teeth.
  5. 10. The starting point or center of something.
Down
  1. 1. A hard mineral with calcium and phosphate found in bones and teeth.
  2. 2. A germ that lives and grows without oxygen.
  3. 3. A germ that needs oxygen to live and grow.
  4. 4. Hardened plaque (tartar) on teeth from not brushing or flossing.
  5. 6. Has no clear shape or structure.
  6. 7. A white blood cell that helps fight infection and disease.