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← HistoryWhich consequence resulted when the Mesopotamians gradually increased canal irrigation salinity?
A)Reduced crop yields due to soil toxicity✓
B)Increased river depth through sedimentation
C)Expanded arable land during annual floods
D)Improved drainage minimizing waterlogging
💡 Explanation
Increased irrigation led to topsoil salinization because evaporation drew groundwater salts to the surface, poisoning arable soil and resulting in lower crop yields. Therefore, reduced crop yields due to soil toxicity followed, not increased river depth, expanded land, or improved drainage all needing desalination.
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