Which consequence results when excessive earthworm activity impacts agricultural topsoil?

💡 Explanation

Decreased soil aggregate stability occurs when excess bioturbation physically breaks down soil structure because earthworm castings have lower structural integrity; therefore topsoil becomes more vulnerable erosion, rather than benefiting seedling emergence or speeding pesticide breakdown.

• Which mechanism causes oxbow lake formation when a river's meander neck narrows during floodplain evolution?
• Which outcome occurs when lava cools as pahoehoe?
• Which outcome occurs when viscous lava cools rapidly against glaciers?
• What fallout risk increases downwind following explosive Hawaiian-style volcanic activity?
• Which phenomenon initiates turbidity currents along submarine fault scarps during seismic activity?
• Which factor most directly elevates the likelihood of explosive volcanism along subduction zones?