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← ScienceWhich flow regime precipitates increased erosion rates in riverbeds?
A)Reynold's number entering turbulent regions✓
B)Laminar flow exhibiting boundary separation
C)Froude number exceeding critical value
D)Subcritical flow approaching tranquil conditions
💡 Explanation
Bed erosion escalates with high Reynold's number because the increased kinetic power drives greater shear stress via turbulent momentum transfer, leading to particle dislodgement and transport; therefore, turbulence, and not alternative flow regimes, amplify basal scour rates.
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