The Grand Canyon

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Across
  1. 2. US lawmakers designated it as the ________ US national park
  2. 4. In the 1540s, Europeans first reached the Grand Canyon led by these
  3. 9. Nearly 40 layers of this stripe its walls red, orange, purple, and pink
  4. 11. The President that protected the Grand Canyon as a forest reserve
  5. 12. This fur trader likely produced the first map of the canyon
  6. 13. Rock layers
  7. 15. Communities of plants and animals
  8. 16. Though 335 have been found, experts believe there are about 1,000 of these hidden among its walls
  9. 17. The canyon has one of the most complete records of this history in the world
  10. 19. This is the only tribe that still lives inside the canyon
  11. 20. This Native American group settled in the canyon by about 500 CE
  12. 21. Intense heat and pressure formed the canyon’s ________ ________
Down
  1. 1. There are 1,443 species of these in the canyon
  2. 3. This reptile cannot be found anywhere else in the world
  3. 5. The largest animals native to the canyon
  4. 6. Material moved by wind or water
  5. 7. The Grand Canyon is home to this - the fastest animal in the world
  6. 8. This river began cutting a channel through the rock about 5 million to 6 million years ago
  7. 10. This geologist led boat expeditions down the Colorado River
  8. 14. This is the state where the Grand Canyon can be found
  9. 18. Each year, millions of visitors enjoy doing this down the river