Calculus

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Across
  1. 6. Grow in presence of free oxygen
  2. 7. Without definite shape
  3. 8. "Tartar"
  4. 9. of calcification
  5. 10. Functions to protect the body
Down
  1. 1. Absence of oxygen
  2. 2. in solution permanently
  3. 3. not made up of cells
  4. 4. Surrounding framework
  5. 5. of origin
  6. 7. Crystaline mineral component