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← GeographyWhich risk increases when rapidly melting permafrost destabilizes stream banks?
A)Increased turbidity from sediment suspension✓
B)Elevated methane release from clathrates
C)Decreased albedo from organic darkening
D)Enhanced carbon sequestration in peatlands
💡 Explanation
Increased turbidity results because **sediment mobilization** introduces fine particles to the stream. This elevates suspended sediment concentrations; therefore turbidity increases, rather than decreases in albedo, sequestering carbon or releasing methane, which are effects mediated primarily via different mechanisms.
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