General Knowledge

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Across
  1. 1. Systematic study of the human past
  2. 6. Language that is spoken in the China
  3. 7. Scientific study of the behavior of the matter
  4. 8. Longest river of the world
  5. 9. King of the rock
Down
  1. 2. Most selled album of the world.
  2. 3. Most expensive metal in the world
  3. 4. Contry with the shape of a boot
  4. 5. Most famous beach in Mexico
  5. 7. Most cultivated product of Guatemala.