Random Crossword puzzle

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Across
  1. 3. Often called "The last city of the Incas", this was the most famous ancient city the Incan Empire inhabited. (Geography)
  2. 5. Most animals are either Bipedal or Quadrupedal. What is the only recognized animal to use Tripedal forms of locomotion? (Animal)
  3. 8. What is the most hardened Substance in the human body? (Science)
  4. 11. Bronze is an Alloy composed of the two metals, Copper and ___? (science)
  5. 12. What video game protagonist has the title for "The most Cosplayed character ever" (Video Games)
  6. 13. This was the first commercially released video game console in the 21st Century? (Video Games)
  7. 14. Oldest independent government country, having gained independence in 301 AD. (Geography)
  8. 16. 4 states in the US share the same border, these are Arizona, Colorado, Utah, and ___? (Geography)
  9. 18. This name is used interchangeably instead of "The Netherlands" (Geography)
  10. 19. What is the only mammal that is incapable of walking backwards? (Animal)
Down
  1. 1. What type of food was the video game character Pac-man modeled off of? (Video games)
  2. 2. This phenomenon is an evolved resemblance between an organism and a different species in order to fool predators.(Animal)
  3. 3. What is the name for consumable meat from an older Sheep (Animal)
  4. 4. A Geiger Counter is a scientific instrument used to measure....? (Science)
  5. 6. The Earths land is composed of three main layers, the top layer called the crust, the deepest called the Core and the middle layer called the? (Science)
  6. 7. What is the process called when a lizard is able to regrow its limbs? (science)
  7. 9. This has so far been the only video game to ever been played in space. (Video Games)
  8. 10. Only Country in the world who's name ends in the letter 'H'? (Geography)
  9. 15. In the Pokémon series, what was the first Pokémon ever designed? (Video Games)
  10. 17. This insect has, not only the highest hunting success rate, but the highest out of every animal in the world at 97% (Animal)