Specialists can be promoted to corporal, the lowest rank of non-commissioned officer, or NCO. An NCO is an enlisted man with the responsibility to lead other soldiers. Corporals lead teams of a few soldiers within a squad. Each squad of as many as 10 soldiers is led by one or more sergeants or a staff sergeant. In squads with a staff sergeant, the staff sergeant commands any other sergeants in the squad.
Organic soil is soil that contains more than 30 percent of decayed organic material from dead leaves, stems and animals, and this material gives the soil a rich color and fibrous texture. Organic soil also receives and retains moisture, which makes it highly supportive for plant growth.
organic material organic material is the glue that binds the soil particles together and plays an important part in preventing soil erosion organic matter is the main source of energy for soil organisms both plant and animal it also influences the infiltration capacity of the soil therefore reducing runoffoil erosion is characterised by the downslope removal of soil particles within a thin sheet of water sheet erosion occurs when the entire surface of a field is gradually eroded in a more or less uniform way