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← HistoryWhich geological issue increases where Inca retaining walls lack angled stone?
A)Increased hydrostatic soil pressure✓
B)Enhanced seismic resistance
C)Improved albedo coefficient
D)Decreased daily thermal expansion
💡 Explanation
Hydrostatic soil pressure increases when water accumulates behind walls because without the drainage provided by angled stone, water builds up, therefore exerting greater force against the wall, rather than draining away like in modern systems.
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