Moderate
The clay fraction of the soil contains particles less than 0.002 mm. Particles <0.001 mm size:
Correct answer: B. Soil colloids
- A. Soil Silt
- B. Soil colloids
- C. Soil loam
- D. Soil sandSoil
Explanation
Particles smaller than 0.001 mm have very high surface area and behave as soil colloids, which strongly influence water-holding capacity, nutrient retention and plasticity. Silt and sand are larger particle-size fractions, while loam is a textural class.
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