General Knowledge

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Across
  1. 3. Government in which citizens vote
  2. 5. Official money of a country
  3. 9. Powerful tropical storm
  4. 10. Arc of colors formed by sunlight and rain
  5. 14. Process plants use to make food
  6. 15. Classical composer from Austria
  7. 20. Scientist known for the theory of relativity
  8. 22. Largest hot desert
  9. 24. System for organizing days and months
  10. 25. Highest mountain on Earth
  11. 26. Famous ancient amphitheater in Rome
  12. 28. Force that attracts objects toward Earth
  13. 29. Largest planet in the Solar System
Down
  1. 1. Board game with kings and queens
  2. 2. Gas humans breathe
  3. 4. Mountain that erupts lava
  4. 6. Imaginary line dividing Earth into two hemispheres
  5. 7. Ancient Egyptian structure
  6. 8. White marble monument in India
  7. 11. International multi-sport event
  8. 12. Molecule carrying genetic information
  9. 13. English playwright who wrote Hamlet
  10. 14. Largest ocean
  11. 16. Instrument used to find direction
  12. 17. Hardest naturally occurring mineral
  13. 18. Closest planet to the Sun
  14. 19. One of the world's longest rivers
  15. 21. Scientist who formulated the laws of motion
  16. 23. Smallest unit of an element
  17. 27. Planet famous for its rings