What is the wearing away of soil by wind, rain and running water called ?

What is the protecting of soil from soil erosion called ?

Loamy soil is very rich and good for the growth of which crop ?

Soil is formed by the breaking up of

Which soil is made up of very fine grains that sticks together ?

Which of these make its home in the soil ?

Which of the following soil has a grey or brown colour ?

Which of these is a good garden soil ?

What is the layer just beneath the top soil called ?

What is the upper layer of the soil called ?