Which consequence results when deforestation occurs in an alluvial river basin?

💡 Explanation

Increased surface runoff results in catastrophic avulsions, because the increased sediment load overwhelms the existing channel; therefore, option A occurs, rather than delta formation or terrace changes, which would require sediment deposition.

• Which landslide risk increases when earthquakes occur on steep, deforested slopes with saturated soil?
• Which effect intensifies when vegetation removal increases the rate of solifluction on permafrost slopes?
• Which failure mode is accelerated when freeze-thaw cycles induce solifluction on a retaining wall's backfill?
• Which outcome occurs when stratovolcano magma traps gases?
• Which risk increases near a volcano with a silica-rich lava dome growing within its caldera?
• Which outcome occurs when seafloor spreading weakens globally?