What do you mean by soil …

Different layers of soil are called soil horizons and the cross sectional arrangement of these layers in soil is called soil profile. Each layers of soil have different texture and color, different depth and varying chemical composition. Layers of soil can be seen while digging a well or when the foundation of a building is laid. Humus is the rotting dead matter present in the soil which makes the soil fertile. Plants absorb their nutrients from the humus in the soil. The different layers of soil are- A- horizon- * This is the topmost horizon and also called as topsoil. * Contains large amount of humus and minerals. * Topsoil is soft and porous. * Capacity of water retention of this soil is more. * Hold the roots of the plants entirely. * House of many living organisms such as worms, rodents, moles and beetles. 2) B-horizon- * Second layer of soil profile and also called as middle layer. * Contains larger amount of minerals than humus. * More compact and harder than topsoil. 3) C-horizon- * Third layer of soil profile. * Small lumps of rocks are found with cracks and cervices. 4) Bedrock- * The last layer of soil profile. * Very hard. * This layer is even difficult to dig with a spade .

• Different layers of soil are called soil horizons and the cross sectional arrangement of these layers in soil is called soil profile.
• Each layers of soil have different texture and color, different depth and varying chemical composition.
• Layers of soil can be seen while digging a well or when the foundation of a building is laid.
• Humus is the rotting dead matter present in the soil which makes the soil fertile.
• Plants absorb their nutrients from the humus in the soil.

 

• The different layers of soil are-
• A- horizon-

* This is the topmost horizon and also called as topsoil.

* Contains large amount of humus and minerals.

* Topsoil is soft and porous.

* Capacity of water retention of this soil is more.

* Hold the roots of the plants entirely.

* House of many living organisms such as worms, rodents, moles and beetles.

     2)   B-horizon-

           * Second layer of soil profile and also called as middle layer.

           * Contains larger amount of minerals than humus.

           * More compact and harder than topsoil.

    3)    C-horizon-

           * Third layer of soil profile.

           * Small lumps of rocks are found with cracks and cervices.

   4)     Bedrock-

           * The last layer of soil profile.

           * Very hard.

           * This layer is even difficult to dig with a spade .