This substance is organized into repellency classes based on the WDPT, or water drop penetration time.
An early classification system of this substance included zonal, intrazonal, and azonal orders. Hans Jenny developed the CLORPT equation that lists the factors that lead to its formation. This substance is organized into repellency classes based on the WDPT, or water drop penetration time. Illuvium is material leached from one layer of this substance to another; those layers are called horizons. Liquid nutrient solutions are used instead of this substance in hydroponics. For 10 points, name this substance that is composed of clay, sand, and silt, and that supports plant life.
An early classification system of this substance included zonal, intrazonal, and azonal orders.
soil [prompt on "dirt"]