super difficult

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Across
  1. 3. technological, human-like thing
  2. 5. you have to do it
  3. 8. the order of something
  4. 10. barely sufficient
  5. 11. to live
  6. 13. to leave or send off
  7. 15. a show that imforms you about a subject
  8. 16. to do or to describe something with rigour
  9. 18. the amount of friction
Down
  1. 1. a lever sort of thing
  2. 2. a separable component, frequently one that is interchangeable with others
  3. 4. a time or set of circumstances that makes it possible to do something
  4. 6. something you use to look at something with magnitude
  5. 7. something that happens after you build up pressure
  6. 9. the result of what happens in the sky
  7. 12. completely still
  8. 14. the state of being missing or gone
  9. 17. something you live through