Across
- 10. Five large lakes in North America
- 13. Eating both plants and animals
- 16. Highest mountain in North America
- 18. Tall cactus of the Sonoran Desert
- 19. Large salty lake in Utah
- 21. Mammal with a protective shell
- 22. Cone-bearing evergreen tree
- 25. U.S. national capital
- 27. Major U.S. river, important for Mark Twain
- 28. Green with vegetation
Down
- 1. Large body of water south of the U.S.
- 2. maritime boundary between Russia and the US
- 3. Large, gentle aquatic mammal
- 4. Wetland-loving tree
- 5. U.S. state in the Pacific Northwest
- 6. Giant California tree
- 7. Very dry
- 8. Unable to support much life
- 9. Large North American wild cat
- 11. Spiky desert tree that resembles a praying human
- 12. North American marsupial
- 14. Native to a particular place
- 15. Wet, wooded area
- 17. Large tropical lizard
- 20. Largest Great Lake
- 23. Active at night
- 24. U.S. island state in the Pacific
- 26. Plant that grows on another plant without feeding on it