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← GeographyWhich geographic alteration results when prevailing winds exceed threshold friction velocities on barren alluvial plains?
A)Development of desert pavement✓
B)Formation of playa lakes
C)Increase in meandering streams
D)Deposition of glacier erratics
💡 Explanation
Desert pavement emerges as 'deflation' removes fine sediments, leaving behind larger rocks; because threshold friction velocities are exceeded. Therefore, a concentrated surface of residual rocks develops, rather than the formation of lakes or altered stream paths.
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