Mr cross cross :(

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Across
  1. 1. to be kept in a place
  2. 3. a small weight
  3. 4. a big farming mobile
  4. 7. A doodad that makes things that are far away look closer
  5. 8. a small world
  6. 9. the study of life
  7. 11. A set of rules someone follows
  8. 12. a very bad thing
Down
  1. 2. having many of
  2. 5. the study of the stars and planets
  3. 6. Able to be trusted
  4. 10. to break an agreement