Things Fall Apart

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Across
  1. 3. a respectful form of address for high power
  2. 7. spacious, well lit, and well ventilated
  3. 8. matters of importance
  4. 9. saliva
  5. 11. derived genetically
Down
  1. 1. needed for a particular purpose
  2. 2. a woody shrub
  3. 4. undergo fermentation
  4. 5. thickened underground part of a stem
  5. 6. enough
  6. 10. walk in a specified way.