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← HistoryWhich consequence results when the *qasrin* earthen dams of ancient South Arabian terrace farms experienced torrential rain?
A)Reduced soil mineral replenishment
B)Increased downstream silt deposition✓
C)Decreased nitrogen fixation rates
D)Enhanced date palm pollination
💡 Explanation
Increased downstream silt deposition results because *qasrin* dam failures led to soil erosion, involving sediment transport, therefore agricultural land suffered rather than benefited, under heavy rainfall.
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