Which process enhances the stability of soil particles?

• A. Soil compaction
• B. Biological activity of soil organisms
• C. Acid rain
• D. Soil erosion

Answer: (B)

The biological activity of soil organisms significantly enhances the stability of soil particles through a variety of mechanisms. Soil organisms, such as earthworms, fungi, and bacteria, play a crucial role in breaking down organic matter into humus, which contributes to soil structure.

As these organisms interact with the soil, they produce organic substances known as glomalin, which help bind soil particles together, improving aggregate stability. This binding process reduces the likelihood of soil erosion and promotes nutrient retention, which is essential for healthy plant growth. Moreover, the burrowing activities of certain organisms create pathways for air and water, further enhancing the soil's structural integrity.

By fostering a diverse ecosystem within the soil, biological activity ensures that the soil remains fertile and resilient against external forces, ultimately supporting agricultural productivity and environmental health.