Incredible Comparisons Crossword

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Across
  1. 2. The fastest land animal
  2. 6. The fastest bird in the world
  3. 9. The tallest waterfall in the world
  4. 10. The fastest fish in the world
Down
  1. 1. The very first plane
  2. 3. The biggest animal in the world
  3. 4. The tallest mountain in the universe
  4. 5. The biggest shark
  5. 7. How many hours does a human sleep
  6. 8. The slowest animal in the world