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Geography

Which risk increases when desert sand source diminishes?

A)Dune stabilization by vegetation increases
B)Increased surface dust-emission instability
C)Enhanced sand abrasion exposing bedrock
D)Decreased long wavelength sediment transport

💡 Explanation

Increased airborne-particulates and dust storms occur globally because diminished sand availability causes vegetation loss and lowers the surface cohesion; this is surface-layer deflation, therefore overall dust-emission risk rises, rather than dune stabilization which requires new sand deposition.

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