Question

Soil erosion by wind brings about a serious damage in soil by changing the__________.

• A. Soil texture
• B. Soil permeability
• C. Soil structure
• D. Soil plasticity

Answer 1

Answer: (A)

• Surface texture is the best key to wind erosion protection. Very fine soil particles are carried high into the air by the wind and transported to great distances (suspension).
• Fine-to-medium-sized soil particles are lifted to a short distance by the air and are dropped back to the soil surface, damaging crops and dislodging more soil (saltation).
• Large-sized soil particles that are too large to be lifted off the ground are dislodged by the wind and roll along the soil surface (surface creep). The abrasion that results from wind-blown particles breaks down stable surface aggregates and further increases the soil erodibility.

So, the correct answer is option C.