Parent material in the soil is identified by which upper case letter?Group of answer choicesBRAC

The parent material in soil is classified and designated by the letter "C" in the soil horizon nomenclature. In soil science, the different layers of soil are referred to as horizons, which are indicated by uppercase letters:

• O horizon – Organic matter, such as decomposed leaves and other plant materials.
• A horizon – Topsoil, which is rich in organic material and nutrients.
• E horizon – Eluviation or leaching layer, where minerals and nutrients are washed out.
• B horizon – Subsoil, which accumulates minerals leached from above layers.
• C horizon – Parent material, which consists of weathered rock and minerals from which the soil develops.

The "C" horizon is crucial since it provides the minerals necessary for soil formation and influences its physical and chemical properties. Identifying this layer helps soil scientists understand soil development processes and the potential for plant growth.