general 20

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Across
  1. 4. structure built to protect against invaders
  2. 5. this insect stings
  3. 6. make this with wheat
  4. 8. big ape
  5. 10. saying this expects an answer
  6. 12. put these on before shoes
  7. 14. doctor whose specialty is teeth
  8. 15. mountains in switzerland
  9. 16. thin sheets we write on
  10. 17. very large body of water
  11. 18. opposite of dirty
  12. 19. liquid from cows, goats, etc.
Down
  1. 1. to multiply a number by itself
  2. 2. first meal of the day
  3. 3. eight legged arthropod, makes webs
  4. 7. use this to make things stick together
  5. 9. we have ten of these
  6. 11. gasoline powered vehicle to carry people
  7. 13. figure of person carved from stone
  8. 16. writing instrument