Round 2 - Master of Words

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Across
  1. 3. Brazil's most spoken language
  2. 5. Study of Past events
  3. 6. Antonym of Artificial
  4. 8. The hardest natural substance
  5. 10. Powerhouse of the cell
  6. 11. Instrument used to measure earthquakes
  7. 16. The largest desert in the world
  8. 17. Edge of a writing instrument
  9. 19. A prominent set of stars visible during
Down
  1. 1. Greek God of the Seas
  2. 2. Most traded currency in the World
  3. 4. The international best-seller of Paulo Coelho
  4. 6. Biggest Basketball league in the World
  5. 7. The science of heredity
  6. 9. Small green Star Wars sensation
  7. 12. Illusion on stage or sorcery in fantasy
  8. 13. Creator of Hogwarts and Voldemort
  9. 14. Capital of Australia
  10. 15. Liquid rock beneath the Earth's surface
  11. 18. Single musical sound or a short memo