Q. 4

Write a short note on the important of “Tremble Soil”.

Answer :

Soil is the topmost layer of earth surface. It is composed of organic and inorganic material. It is the biologically active and porous medium developed in the uppermost layer of Earth’s crust.

There are basic three types of soil: sand, silt and clay.

*Sand: It is actually small particles of weathered rock. It is coarse and loose so water is able to drain through it easily.

*Silt: It has water holding capacity better than sand.

*Clay: It is very fine grained soil. Its particles are smaller than silt.

Importance of soil:

*It is habitat for many insects and other organisms. Insects and microbes live in the soils and depend on soils for food and air.

*Soil support roots and keep them upright for growth.

*Soils provide air for gaseous exchange between roots and atmosphere.

*Soils hold water and maintain adequate aeration.

*It is medium for plant growth.

*It supports animal life.

*It provides sites for agricultural activities.

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