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Geography

Which 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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