Mr Millers ultimate crossword puzzle

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Across
  1. 1. being correct or exact
  2. 5. a person who belongs to a country
  3. 6. relating to the whole world
  4. 8. the system of money and trade in a country
  5. 10. to make something stronger or louder
  6. 14. always acting or happening in the same way
  7. 15. farming and the growing of crops
  8. 16. a vertical arrangement of information
  9. 17. facts or information
  10. 18. to show or explain with examples or pictures
Down
  1. 2. a group that shares similar characteristics
  2. 3. an important part or characteristic
  3. 4. the amount something can hold or do
  4. 7. to work together with others
  5. 9. a testable idea or explanation
  6. 11. to help someone
  7. 12. to give someone a task or duty
  8. 13. to make a careful guess based on information
  9. 14. to make or produce something new
  10. 15. happening once every year