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 do all types of soil have in common? All types of soil are composed of three basic ingredients: silt,clay, and sand. Additionally, many soils have a layer of humuswhich is organic material. Different proportions â¦ of each are whatmake different soils have the characteristics that they have.