Root of the week

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Across
  1. 1. to complete
  2. 5. the ability of a wheel or tyre to hold the ground without sliding
  3. 8. an inability to stop doing or using something
  4. 12. to see
  5. 13. A thing
  6. 14. the process of the sugar in food or drink changing into alcohol because of a chemical process
  7. 15. used as a written instruction to tell a reader to look at a particular book, page, etc. for more information
  8. 16. to like, choose, or want one thing rather than another
Down
  1. 2. minus
  2. 3. to suddenly go down onto the ground or towards the ground without intending to or by accident
  3. 4. a book that tells you the meaning of words
  4. 6. a Scandinavian country
  5. 7. a region of the earth's surface and the particular combination of climate,plants, and animals that are found in it
  6. 9. to use tricks and dishonest methods to get what you want
  7. 10. being able to see
  8. 11. to leave an aircraft in an emergency using an ejection seat
  9. 17. something that is known to have happened or to exist, especially something for which proof exists, or about which there is information