Rounding of angular edges of rock outcropping and formation of insitu, spherical boulders are both indications of ________
A) chemical weather and associated spheroidal weathering
B) humans and animals walking across the Earth's surface, wearing away the surface
C) rock fall onto sharp edges breaking of angular corners of rock outcrops
D) dissolution of the rock surface by acid rain
A
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The primary sector of the economy includes which of the following?
A) data processing B) beverage bottling C) government D) sheep herding E) banking
Why do ecosystems and related plant communities in the Rocky Mountains show evidence of altitudinal zonation while the Appalachian Mountains in eastern North America do not?
What will be an ideal response?
What is one of the effects of climate change in North America?
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