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Which outcome occurs when pre-Columbian terrace construction fails?

A)Topsoil erosion increases dramatically downgrade
B)Water flow redirection upstream intensifies
C)Crop yield doubles unexpectedly
D)Soil nutrient concentration shifts laterally

💡 Explanation

Topsoil erosion accelerates due to the hillsides exposure, induced by terracing failure. The mechanism is surface runoff intensifying because loss of terrace structure; therefore soil loss happens rather than enhanced fertility or flow redirection, which are caused by other hydrologic impacts.

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