Identifying Keywords

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Across
  1. 2. Why is a keyboard arranged the way it is?
  2. 5. What is zoology?
  3. 6. How many eyes does a grasshopper have?
  4. 9. Where do tigers live in the wild?
  5. 10. How many strings does a violin have?
  6. 12. When was the first professional baseball game played?
Down
  1. 1. What kind of atmosphere is on the planet, Venus?
  2. 3. How many different types of animals live in Antarctica?
  3. 4. When was the first computer built?
  4. 7. What is another name for Orion?
  5. 8. What countries play rugby?
  6. 11. What kind of an instrument is a flute?