How does organic matter influence soil structure?

Organic matter plays a crucial role in influencing soil structure by helping to bind soil particles into aggregates. This aggregation is important because it enhances the soil's physical properties. When soil particles are clumped together in aggregates, there are more cavities between them, which improves aeration and allows for better water retention. This is particularly beneficial for plant roots, which need access to both air and water in the soil.

The presence of organic matter also contributes to the formation of stable aggregates over time, which can lead to a more resilient soil structure. It typically includes decomposed plant material, humus, and microbial byproducts that help improve the cohesion between soil particles.

In contrast, the other choices do not accurately describe the role of organic matter. While it might be true that some components of organic matter can temporarily affect soil acidity, the overall impact of organic matter is to enhance soil fertility and structure rather than diminish it or have no significant impact.