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 is soil made of? Soil is a mixture of rock particles, minerals, decayed organic material, water, and air. Humus âa dark-colored substance that forms as plant and animal remains decay. It has nutrients plants need, making the soil fertile. Fertility. measures how well soil supports plant growth.