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← GeographyWhich outcome occurs when sparse desert vegetation reduces surface drag?
A)Increased transverse dune migration rate✓
B)Decreased regolith formation by exfoliation
C)Stabilization of ephemeral stream channels
D)Lessened chemical weathering from dew
💡 Explanation
Increased wind speed occurs close to the surface when vegetation is sparse, leading to greater sand transport via saltation. This causes faster transverse dune movement because the force equilibrium shifted toward migration, rather than dune stabilization, by vegetative anchoring.
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