Construction of which of the following along the river banks  helps in preventing soil erosion?

The mineral and organic materials on the surface of the earth is:

How is soil formed?

Protection of soil from erosion is called:

Planting of trees in large scale on open land is known as:

The processing of wearing away of rocks is called:

Which is necessary for prevention of soil erosion?

Hard, solid parts of the earth are called:

The upper layer of the soil is called the:

Strong winds cause soil: