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← GeographyWhich consequence results when thermal stratification impedes vertical mixing in fjord streams?
A)Decreased dissolved oxygen concentrations✓
B)Increased rate of glacial retreat
C)Enhanced riverbed sediment transport
D)Reduced coastal erosion intensity
💡 Explanation
Reduced mixing due to thermal stratification causes oxygen depletion because blocked replenishment from the surface is a case of inhibited gas exchange. This depletion reduces the water quality, therefore affecting aquatic life, rather than altering glacial retreat or sediment flow dynamics.
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