3.* Answer the following question in brief.
Explain with the help of a diagram how soil is formed
Ans.
Answers
Explanation:
soil is formed by the process of weathering during which rocks break down to soil form particals . this breaking down of rock occurs over a period of millions of year . weathering can be physical, chemical, and biological
Answer: The surface layers are made up of- organic debris that is partially decomposed.
The topsoil is made up of mineral particles mixed with organic material.
The subsoil is made up of compounds draining from above.
Parent material-
Parent material is the underlying geological material (generally bedrock or a superficial or drift deposit) in which soil horizons form.
Bedrock- is made up of weathered rock.
The soil is made from weathering: frost, ice, hail and rain break rocks down. Fine parent material is formed by chemical weathering(acids, moisture) and due to spontaneous weathering, minerals, nutrients, oxides of iron and aluminium, silica, sand and quartz mix into the soil.
The soil also consists of humus which makes it fertile for plant growth.
Hope this helps ;-)
Explanation:
