What is the definition of soil?

Soil is defined as a dynamic medium composed of minerals, organic matter, water, air, and living organisms. This definition highlights the complexity and variability of soil, emphasizing that it is not a fixed entity but rather a living system that undergoes constant change. The presence of minerals contributes to the soil's structure and nutrient content, while organic matter is crucial for fertility and supports a diverse ecosystem of microorganisms, plants, and animals. The inclusion of water and air is essential, as they influence the physical and chemical processes that occur within the soil, impacting everything from plant growth to nutrient cycling. The notion of soil as a dynamic medium underscores its roles in environmental health, agricultural productivity, and ecological stability.