TERRA word study

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Across
  1. 2. cotta- baked earth
  2. 4. a hollow stone found on earth filled with crystals
  3. 7. under surface of the earth
  4. 8. out of this world
  5. 9. a raised flat mound of earth
  6. 10. study of the earth
Down
  1. 1. an area
  2. 3. the science of the earth
  3. 5. a person who studies regions of the earth
  4. 6. completely surrounded by land