Question

layers of soil short paragraph​

Answer 1

Answer:

The soil is found in layers, which are arranged during the formation of soil. These layers called horizons, the sequence of layers is the soil profile. The layers of soil can easily be observed by their color and size of particles. The main layers of the soil are topsoil, subsoil and the parent rock.

Explanation:

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Answer 2

Answer:

Soil is one of the most important natural resources. It is the uppermost layer of earth’s crust which is blackish-brown in colour. Major functions of the soil are:

It supports plant growth by holding the roots firmly and supplying water and nutrients to the plants.

It acts as a natural habitat for many organisms like an earthworm, fungi, bacteria, ants, etc.

It is also essential for agriculture which provides us with food, clothing and shelter for all.

It supplies water and nutrients to plants.

Therefore, we can say that soil is an inseparable part of our life.

Soil Teeming with Life

Soil contains air, water and countless living organisms like fungi, bacteria, insects (like ants and beetles), earthworms, rodents, moles and plant roots. Some organisms are too small that they cannot be seen by naked eyes (e.g. fungi and bacteria). An important soil organism is an earthworm, it is visible only in the rainy season. It increases the fertility of soil. An analysis of different soil samples is summarised in the table given below:

Soil Source Plants Animals Any other observations

Garden soil Grasses and roots Ants, earthworms, termites and beetles Concrete

Soil from roadside Dry roots Ants and termites Concrete, plastic bags and glass particles

Soil from the area where construction is going on No plants Ants Gravels, plastic articles, polythene bags, sand, etc

Soil from agricultural land Grass roots and plant roots Earthworms, milipedes, centipedes, fungi and bacteria Concretes, glass materials and manure (cow dung)

Soil from river side Dry grasses, hays and humus Milipedes, centipedes, and lichens Glass particles, concrete, plastic articles, and polythene bags

Soil are of various types

1. Topsoil
2. Clayey soil
3. Sandy soil