Which effect results due to subsidence in ancient Andean agricultural terraces using 'enchedding'?

💡 Explanation

When terraces built using 'enchedding' subside due to soil compaction and decomposition, decreased pore space and poor drainage leads to anoxic conditions favouring anaerobic bacteria at terrace base limiting root growth. Therefore anoxic soil conditions result rather than aeration, stabilisation or reducing freeze, which depend on other mechanisms.

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