Question

State the meaning of the term 'soil.​

Answer 1

Answer:

The unconsolidated mineral or organic material on the immediate surface of the Earth that serves as a natural medium for the growth of land plants. ... The upper limit of soil is the boundary between soil and air, shallow water, live plants, or plant materials that have not begun to decompose.

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Answer 2

The meaning of the term 'soil' is a loose surface layer that could be organic or inorganic and covers the land.

Composition of soil

• It consists of plant remnants, animal remains, and microbial tissues decomposing into organic matter.
• It also contains mineral materials formed during the separation and disintegration of rocks.
• It has microorganisms, worms and insects.
• The presence of humus causes the black or brown colour seen in the surface layers of soil profiles.

Functions of soil

• Soil is the most basic necessity for plant growth and sustenance.
• Because of its porous nature, it is an ideal micro reservoir for supplying water to plants.
• It's essential for the decomposition and mineralization of organic substances.