Experiment

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Across
  1. 1. Group of ravens is known as
  2. 3. Ice cream originated in this country
  3. 6. Nearest planet to the Sun
  4. 8. Stop sign shape
  5. 9. Duel between three people
Down
  1. 2. Area 51 is located here
  2. 4. Food that never goes bad
  3. 5. Neighbor of Turkey and Israel
  4. 6. Unit of speed of a computer mouse
  5. 7. This country's national animal is unicorn