Which outcome arises when silt accumulation obstructs flow?

💡 Explanation

A reduction in water flow occurs because sediment accumulation increases flow resistance; this is the mechanism of hydraulic friction. Lower resistance allows for more water flow because channel cross-section shrinks rather than altering boundary composition or flow properties.

• Which outcome arises when medieval Islamic astronomers' altitude measurements are affected by atmospheric refraction at twilight?
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• Which consequence resulted from early sextant inaccuracy on long voyages?
• Which consequence results when environmental factors degrade an Inca quipu?
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