The world's desert regions _____

a. have always had arid climates
b. are 99 percent covered by active sand dunes
c. are fragile environments
d. have no vegetation
e. have no topographic relief


c

Environmental & Atmospheric Sciences

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Where does most of the sediment on the Pacific coast originate from?

a. Granite rock b. Biological productivity c. Basalt Rock d. Lava

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For the following balanced reaction, which of the following is a solid? 2 Na(l) + Cl2(g) ? 2 NaCl(s)

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