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← HistoryWhich risk increased dramatically in 3rd millennium BCE Mesopotamian settlement canals that used flow constrictors?
A)Increased sediment deposition upstream✓
B)Decreased effective water supply
C)Increased canal wall structural failure
D)Decreased navigation ability downstream
💡 Explanation
Increased sediment deposition upstream occurs because reducing the canal cross-sectional area decreases flow velocity at constrictors, increasing settling via Stokes' Law. Therefore deposition increases, rather than decreasing water supply because capacity becomes sediment-limited rather than volume-limited.
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