Which process accelerates soil horizon mixing when earthworm populations increase?

💡 Explanation

Soil horizons mix faster due to bioturbation by earthworms because soil aggregates are dispersed by their burrowing and castings, therefore decreasing soil stratification, rather than these other strictly chemical or hydrological processes.

• Which landscape outcome results when carbonic acid dissolution weakens bedrock?
• Which risk drastically increases when groundwater acidity increases flowing through karst?
• Which outcome occurs when trade winds weaken due to reduced pressure gradient and Coriolis effect in the Pacific?
• Which outcome occurs regarding speleothem deposition when water evaporation increases within caves?
• Which outcome results from reduced vegetation on dune systems?
• Which outcome occurs when deflation winnowing in dunes weakens?