IV Answer the following questions in a few sentences.
1. Explain the formation of soil,
2. Write a short note on soil erosion
3. What is terrace farming? How does terrace farmning help in conserving soil?
Answers
Answer:
1) Soil is the thin layer of material covering the earth's surface and is formed from the weathering of rocks. It is made up mainly of mineral particles, organic materials, air, water and living organisms—all of which interact slowly yet constantly.
2)Soil erosion is defined as the wearing away of topsoil. ... The impact from the raindrops loosens topsoil, allowing small fragments to detach. If the rainfall continues, water gathers on the ground, causing water flow on the land surface, known as surface water runoff, which carries soil away and deposits it elsewhere
3)Terrace cultivation, method of growing crops on sides of hills or mountains by planting on graduated terraces built into the slope. Though labour-intensive, the method has been employed effectively to maximize arable land area in variable terrains and to reduce soil erosion and water loss.
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