Known and unknown Science Facts

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Across
  1. 1. Capable to express over 100 vocal sounds
  2. 4. world largest amphibian
  3. 9. how many countries competed in 2018 winter olympics
  4. 12. most earthquake country
  5. 13. oldest profession in the world
  6. 15. has 3 hearts
  7. 17. largest particle accelerator
  8. 18. is the first scientist awarded two noble prizes
Down
  1. 2. is the youngest country in the world
  2. 3. world largest bridge
  3. 5. home video games developed first
  4. 6. is hottest planet in our solar system
  5. 7. male species give birth to young one
  6. 8. has more islands than any other countries
  7. 10. breath through their butts
  8. 11. oldest living tree in the world
  9. 14. true carnivores
  10. 16. best place to see rainbow