16. The transformation of semi-arid regions into deserts is called
17. This area in Utah is probably which type?
18. What are the main types of deserts?
19. What minerals are responsible for the orange-brown colors of weathered surfaces in the desert?
20. Which adaptation would help a desert plant survive a hot summer?
21. Which environment would have the most coniferous trees?
22. Which of the following would you least expect to find in a desert?
23. Which one of the following deserts is famous for deposits of nitrates?
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