Question

Short note on Soil as a resource { CLASS 10 CBSE}
Answer should be in points

Answer 1

Explanation:

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• Soil is the most important renewable natural resource. It is the medium of plant growth and supports different types of living organisms on the earth.

• It takes millions of years to form soil upto a few cms in depth. Various forces of nature such as change in temperature, actions of running water, wind and glaciers, activities of decomposers etc contribute to the formation of soil.

• Parent rock or bedrock, climate, vegetation and other forms of life and time are important factors in the formation of soil.

• Chemical and organic changes which take place in the soil play an important role.

• Chemical and organic changes which take place in the soil play an important role.Soil also consists of organic (humus) and inorganic materials.

Answer 2

Answer:

short note on soil as a resource

• Soil is as important as water as a resource. It provides nutrients and an anchor to the roots of plants and is therefore essential to their healthy growth and yield of food.

• It is a complex mixture of organic and mineral content which is constantly being formed by the weathering of rocks.

• Soil has a layered structure, with the topsoil being around 4 in (10 cm) deep and rich in organic material.

• Then there is a layer between topsoil and subsoil through which dissolved or suspended matter moves. Below this is the subsoil, where humic compounds, clay, iron, and aluminum may accumulate after leaching from the upper layers.

• Finally there is the actual bedrock, which is the source of the soil through weathering processes. Soil is also classified according to the size of the particles it contains .

Explanation:

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