PATHOLOGY

Detailed explanation-1: -The soil profile is the collective name for layers of soil. The layers are known as called horizons and their physical, chemical and biological characteristics differ from the layers above and beneath. The layers of soil are the soil profile.

Detailed explanation-2: -The collective name for the layers of soil is called soil profile.

Detailed explanation-3: -These layers called horizons, the sequence of layers is the soil profile. The layers of soil can easily be observed by their color and size of particles. The main layers of the soil are topsoil, subsoil and the parent rock. Each layer has its own characteristics.

Detailed explanation-4: -The A horizon is the top layer of the mineral soil horizons, often referred to as ‘topsoil’. This layer contains dark decomposed organic matter, which is called “humus".