The Letter X Puzzle

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Across
  1. 2. Abnormal dryness of a body part or tissue
  2. 3. A Mediterranean sailing vessel
  3. 4. A hard, woody fruit
  4. 6. An African ground squirrel
  5. 7. The transfer of pollen from one plant to another
  6. 8. Part of the sternum
  7. 9. A frog native to South Africa
  8. 10. A gaseous element
Down
  1. 1. A sugar not fermentable with ordinary yeast
  2. 2. To copy on a xerographic copier
  3. 3. A flammable hydrocarbon
  4. 5. A feebly basic compound that occurs in animal and plant tissue
  5. 6. A univalent radical
  6. 7. The effect of pollen on certain plant structures
  7. 8. A yellow pigment