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.
What Soil is Made Of: Humus. After a plant dies, things living in the soil such as earthworms, fungi, and soil microbes decompose it by eating its constituent organic compounds-carbohydrates, proteins, fats, lignins, etc.