General facts

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Across
  1. 4. Capital of Germany.
  2. 6. Smallest province in Costa Rica.
  3. 8. Planet that has rings around it.
  4. 9. Sometimes people bite them when they are nervous.
Down
  1. 1. You get this if you mix red and yellow.
  2. 2. "Money can't buy ...."
  3. 3. Chemical element humans need to breathe.
  4. 4. Only mammal that can fly.
  5. 5. Biggest country in the world.
  6. 7. "The early bird catches the best ..."