Question

7. What is soil? Why is it referred to as a living system?​

Answer 1

Answer:

Soil means the uppermost layer of the earth's crust, which contains the organic as well as mineral matter necessary for the growth of plants. Soil is a living system because it contains living organisms: plants, animals, fungi, protozoa, bacteria, archaea.

Answer 2

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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. Soil profile showing the different layers or horizons.

Soil is a living system because it comprises of living organisms such as plants and animals. ... Presence of organic substances indicates the robustness of the soil. Generally five factors determine the quality. Some of them include climate, organisms, landscape, position, parent material and time.