label the parts layer of soil
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Soil Horizons (layers): Soil is made up of distinct horizontal layers; these layers are called horizons. They range from rich, organic upper layers (humus and topsoil) to underlying rocky layers ( subsoil, regolith and bedrock).
O Horizon - The top, organic layer of soil, made up mostly of leaf litter and humus (decomposed organic matter).
A Horizon - The layer called topsoil; it is found below the O horizon and above the E horizon. Seeds germinate and plant roots grow in this dark-colored layer. It is made up of humus (decomposed organic matter) mixed with mineral particles.
E Horizon - This eluviation (leaching) layer is light in color; this layer is beneath the A Horizon and above the B Horizon. It is made up mostly of sand and silt, having lost most of its minerals and clay as water drips through the soil (in the process of eluviation).
B Horizon - Also called the subsoil - this layer is beneath the E Horizon and above the C Horizon. It contains clay and mineral deposits (like iron, aluminum oxides, and calcium carbonate) that it receives from layers above it when mineralized water drips from the soil above.
C Horizon - Also called regolith: the layer beneath the B Horizon and above the R Horizon. It consists of slightly broken-up bedrock. Plant roots do not penetrate into this layer; very little organic material is found in this layer.
R Horizon - The unweathered rock (bedrock) layer that is beneath all the other layers.
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Soil Horizons (layers): Soil is made up of distinct horizontal layers; these layers are called horizons. They range from rich, organic upper layers (humus and topsoil) to underlying rocky layers ( subsoil, regolith and bedrock).
O Horizon - The top, organic layer of soil, made up mostly of leaf litter and humus (decomposed organic matter).
A Horizon - The layer called topsoil; it is found below the O horizon and above the E horizon. Seeds germinate and plant roots grow in this dark-colored layer. It is made up of humus (decomposed organic matter) mixed with mineral particles.
E Horizon - This eluviation (leaching) layer is light in color; this layer is beneath the A Horizon and above the B Horizon. It is made up mostly of sand and silt, having lost most of its minerals and clay as water drips through the soil (in the process of eluviation).
B Horizon - Also called the subsoil - this layer is beneath the E Horizon and above the C Horizon. It contains clay and mineral deposits (like iron, aluminum oxides, and calcium carbonate) that it receives from layers above it when mineralized water drips from the soil above.
C Horizon - Also called regolith: the layer beneath the B Horizon and above the R Horizon. It consists of slightly broken-up bedrock. Plant roots do not penetrate into this layer; very little organic material is found in this layer.
R Horizon - The unweathered rock (bedrock) layer that is beneath all the other layers.
HOPE THIS WILL HELP YOU ❤️❤️
STAY BLESSED ❤️ ❤️
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1. Horizon A or Topsoil
It is also called humus layer, which is rich in organic material. This layer consists of decomposed material and organic matter.
2. Horizon B or Subsoil
Just below the topsoil lies another layer called subsoil or horizon-B. It is comparatively harder and compact than topsoil.
3. Bedrock or Horizon C
Bedrock is also known as parent rock and lies just below the subsoil. It contains no organic matter and made up of stones and rocks, so it is very hard.
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It is also called humus layer, which is rich in organic material. This layer consists of decomposed material and organic matter.
2. Horizon B or Subsoil
Just below the topsoil lies another layer called subsoil or horizon-B. It is comparatively harder and compact than topsoil.
3. Bedrock or Horizon C
Bedrock is also known as parent rock and lies just below the subsoil. It contains no organic matter and made up of stones and rocks, so it is very hard.
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