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Geography

Which phenomenon limits vertical building construction along the San Andreas Fault?

A)Liquefaction during seismic events
B)Subsidence from groundwater depletion
C)Saltwater intrusion into freshwater aquifers
D)Erosion from intense seasonal rainfall

💡 Explanation

When seismic waves propagate through loose, water-saturated soil near the fault, ground motion causes liquefaction because pore water pressure increases, reducing soil strength and causing it to behave like a liquid, undermining foundations. Therefore, building construction is limited by liquefaction, rather than subsidence, saltwater intrusion, or erosion, which require different geological triggers.

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