Soil formation, or pedogenesis, is the scientific process by which geological materials develop into soil. This complex process involves the transformation of a parent material through the interaction of several critical factors, including climate, the organisms (biota) present, topography, time, and the material itself. These interacting forces chemically and physically alter the substrate, creating distinct horizontal layers known as soil horizons. The process includes weathering, which breaks down parent rock material into smaller particles, and the accumulation of organic matter from decaying life forms. The resultant soil structure is a dynamic, vital medium that supports terrestrial ecosystems by mediating nutrient cycling and retaining moisture.