Jacob's Fish in a Tree Crossword

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Across
  1. 5. Removal of tissue to find disease
  2. 7. Deny something by using the opposite idea
  3. 8. Close observation
  4. 13. Marked by using irony
  5. 15. Pursued in addition to the normal course of study
  6. 16. A complete destruction of something
  7. 17. Cause someone to feel very bad
  8. 18. Loss of memory
Down
  1. 1. Relating to the application of scientific methods to the investigation of crime
  2. 2. Move away from a certain point
  3. 3. An opening on a house that allows air to flow through
  4. 4. Relationship
  5. 6. An examination of someone’s own mental health
  6. 9. Comfort received by a person after tragedy
  7. 10. Impossible to perceive
  8. 11. Extreme tiredness resulting from mental or physical exertion or disease
  9. 12. To change form or character of
  10. 14. Surgical procedure on a corpse