What outcome is observed when excessive topsoil erosion exposes underlying loess deposits to increased surface runoff events from agricultural irrigation?

💡 Explanation

Excessive topsoil loss leads to increased nutrient transport via overland flow, triggering algal blooms and oxygen depletion, creating aquatic dead zones; this is because nutrient runoff is the dominant transport mechanism; therefore, eutrophication occurs rather than other soil-related phenomena like sinkholes.

• Which outcome occurs when glacial retreat exposes extensive loess deposits to fluvial erosion?
• Which process causes increased earthquake frequency along strike-slip fault lines under high geothermal gradients?
• Following a river avulsion event, which process promotes oxbow lake formation when the river establishes a straighter course?
• Which consequence results when limestone dissolution causes sinkhole formation?
• Which outcome results from unchecked eolian deposition along river valleys?
• Which hydrologic outcome results when atmospheric streams encounter orographic barriers?