Earth Day

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Across
  1. 2. The steepest cliff on Earth.
  2. 4. The largest cave in the United States.
  3. 8. The biggest country by land area in the world.
  4. 10. The deepest canyon on Earth.
  5. 12. The longest river on Earth (traditional name).
  6. 14. The city that receives the most snowfall on Earth.
  7. 15. The deepest known point on Earth’s surface.
  8. 16. The Earth’s largest ocean.
  9. 17. The largest peninsula on Earth.
  10. 20. The largest mesa on Earth.
  11. 23. The largest active volcano in the world.
  12. 30. The largest freshwater lake by volume on Earth.
  13. 32. The lowest point on Earth.
  14. 33. The largest plain on Earth.
  15. 35. The driest region on Earth outside Antarctica.
  16. 37. The tallest waterfall on Earth.
Down
  1. 1. The highest point on Earth.
  2. 3. The ecosystems that produce more than half of all the oxygen on Earth.
  3. 5. The longest river in the United States.
  4. 6. The longest mountain range in the United States.
  5. 7. The largest isthmus on Earth.
  6. 9. The largest sand dune on Earth.
  7. 11. The largest cave on Earth.
  8. 13. The highest point in the United States.
  9. 18. The largest living organism on Earth.
  10. 19. The widest alpine valley on Earth.
  11. 21. The biggest mountain range in South America.
  12. 22. The largest rainforest jungle on Earth.
  13. 24. The largest glacier on Earth.
  14. 25. The widest waterfall on Earth.
  15. 26. The layer of the Earth’s atmosphere that is closest to the surface and contains most of the weather phenomena.
  16. 27. The largest oasis on Earth.
  17. 28. The largest bay on Earth.
  18. 29. The city that gets the most rainfall on Earth.
  19. 31. The largest island on Earth.
  20. 34. The hottest desert on Earth.
  21. 36. The most earthquake prone state in the United States.