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2. Three canyons in the southwestern United States are related; they share a common layer of sandstone. The common layer occurs at a different elevation in each canyon. This suggests that at some point, the Colorado Plateau was

A. located on a mountain top
B. covered by a deep ocean
C. part of another canyon system

User Sabumnim
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1 Answer

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it's b i think extracharecters
User Tolbard
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