Question

5
7. Incorrect irrigation methods can lead to soi
erosion.
Short answer questions
D. Answer in brief.
1. What is weathering?
2. Name the three major layers of soil.
3. Name the main constituents of soil.​

Answer 1

answer 1. Weathering is the breaking down or dissolving of rocks and minerals on Earths surface. ... Water, ice, acids, salts, plants, animals, and changes in temperature are all agents of weathering. Once a rock has been broken down, a process called erosion transports the bits of rock and mineral away.

answer 2. Most soils have three major horizons (A, B, C) and some have an organic horizon (O). The horizons are: O -(humus or organic) Mostly organic matter such as decomposing leaves. The O horizon is thin in some soils, thick in others, and not present at all in others.