What is a primary contributor to soil pollution?

Poor land management is a primary contributor to soil pollution because it encompasses practices that can lead to the degradation of soil quality and health. Inadequate management can result in the over-application of fertilizers and pesticides, which can introduce harmful chemicals into the soil. These substances can affect the soil's pH, disrupt its biological activity, and lead to nutrient imbalances. Additionally, poor land management can include practices like deforestation, overgrazing, and improper waste disposal, all of which can result in soil erosion and the accumulation of contaminants.

While excessive rainfall can lead to issues like erosion and runoff, it is not a direct cause of soil pollution. Similarly, a reduction in agricultural practices does not inherently contribute to soil pollution; it may even result in less chemical input into the soil. Natural decomposition, on the other hand, is a beneficial process that contributes to nutrient cycling in the soil and does not lead to pollution.