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← GeographyWhich outcome results when wind abrasion exposes differential bedrock?
A)Ventifact smoothness increases significantly✓
B)Desert pavement lacquers darken extensively
C)Slipface slope angles markedly increase
D)Barchan dune migration accelerates locally
💡 Explanation
Increased smoothness arises from differential resistance leading to preferential abrasion; the abrasive particle flux smooths softer layers more rapidly because wind abrasion, a sculpting action, preferentially erodes less resistant bedrock. Therefore, ventifact smoothness specifically increases, rather than slipface angles changing or desert pavement changing.
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