________ is the primary agent that anchors sand dunes to prevent their migration.
A) Wind
B) Liquid water
C) Ice
D) Soil
E) Vegetation
Correct Answer:
Verified
Q45: Ergs are _.
A) sometimes originated by non-desert
Q46: Where the landscape is covered by sand
Q47: The wind rolling pebbles across the desert
Q48: Sand grains are generally made out of
Q49: Approximately _ percent of the coterminous United
Q51: A fine-grained wind-deposited surface material with extensive
Q52: The main dune form in most deserts
Q53: The steeper leeward side of a sand
Q54: In a "true sandstorm," _.
A) terrain is
Q55: The _ is a type of very
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