Question

4. Explain how soil is formed.
5. How is clayey soil useful for crops?​

Answer 1

Answer:

Soil minerals form the basis of soil. They are produced from rocks (parent material) through the processes of weathering and natural erosion. Water, wind, temperature change, gravity, chemical interaction, living organisms and pressure differences all help break down parent material.

For growing crops such as wheat, gram, and paddy, the soil should be good at retaining water and rich in organic matter is suitable. Therefore,clayey soils having these characteristics are useful for such kind of crops. Because it is good in absorbing and holding water forplants.

Answer 2

Answer:

Soil is formed through the process of weathering. Weathering is a process of physical breakdown and chemical decomposition of rocks and minerals near or at the surface of the earth. This physical and chemical decomposition is primarily done by wind, water, and climate. As a result of these processes, large rock pieces are converted into smaller pieces and eventually to soil.