Question

(c) Why different layers of soil component are formed? ( For class 7 )​

Answer 1

Answer:

Each layer differs in feel (texture), colour, depth and chemical composition. These layers are referred to as horizons. The uppermost horizon is generally dark in colour as it is rich in humus and minerals. The humus makes the soil fertile and provides nutrients to growing plants.

Answer 2

Answer:

Soil formation results from a combination of biological, physical, and chemical processes. Soil is not homogenous because its formation results in the production of layers called a soil profile. Factors that affect soil formation include: parent material, climate, topography, biological factors, and time.

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