Which impact occurred when Roman road construction introduced a dense, impermeable pavement layer into a previously permeable landscape?

💡 Explanation

When road construction added an impermeable layer, decreased infiltration and increased runoff would take place because the paving prevents rainfall soaking into the ground, leading to significantly increased surface water flow volumes. Therefore flooding would be the outcome,rather than reduced productivity, temperature elevation, or faster bridge support weathering which involve alternative mechanisms.

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