Known and unknown Science Facts

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Across
  1. 3. More islands than any other countries
  2. 4. Hardest natural substance
  3. 8. First scientist awarded with two noble prizes
  4. 9. How many seconds did an individual blood cell takes to make a complete circuit of the body.
  5. 10. Capable to express over 100 vocal sounds
  6. 12. Which animal have 3 hearts
  7. 13. Where is the world largest bridge located
  8. 16. Youngest country in the world
  9. 18. Male species give birth to young one
  10. 19. Most earthquake country
Down
  1. 1. how many countries competed in 2018 winter olympics
  2. 2. Hottest planet in our solar system
  3. 3. World largest amphibian
  4. 5. Where is the oldest living tree located
  5. 6. Strongest natural material
  6. 7. Oldest profession in the world
  7. 11. Breathe through their butts
  8. 14. Brightest object in the sky
  9. 15. Which animal sleep an average of 22 hours a day
  10. 17. First home video games developed