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← GeographyWhich risk increases when winds persistently exceed lichen-cover anchoring thresholds?
A)Increased siltation of aeolian loess✓
B)Decreased floodplain sediment retention
C)Enhanced chemical weathering efficiency
D)Reduced arroyo incision rates
💡 Explanation
Increased winds exceeding lichen threshold causes loess accumulations because deflation removes finer sediments, transporting it to adjacent formation sites. Therefore, siltation increases, rather than deposition being suppressed like with chemical weathering or retention.
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