Teachers are categorized in four main classes in Bangladesh at University level. The ascending rank of teacher is Lecturer, Assistant Professor, Associate Professor and Professor. The initial position Lecturer is generally enrolled as the top student of the class. Master's degree is required for normal university level Lecturer.
Humus soil is soil made up of decayed organic material. Popularly, it refers to soil that is light in texture, dark brown or black in color, and sweet-smelling.
Rating Newest Oldest. Best Answer: Much of the earth's surface is covered with a blanket of disintegrated and decomposed rock and mineral fragments produced by weathering.When this is mixed with water,air and decayed plant and animal remains(humus),soil forms.The mineral content of the bedrock determines the nutrient richness of the soil produced.