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Geography

Which consequence results upon constructing housing developments on an alluvial fan without adequate drainage?

A)Increased risk of flash flooding events
B)Elevation of local water table levels
C)Increased frequency of seismic activity
D)Accelerated rates of desertification onset

💡 Explanation

When developments impede natural drainage pathways, increased runoff occurs because rainfall cannot infiltrate saturated alluvial sediments, concentrating flow downstream. Therefore increased risk of rapid flash floods results, rather than water table rise, seismic activity, or desertification, which depend on distinct geological processes.

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