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Soil begins to form in the top layer of the Earth's crust, known as the "A horizon" or topsoil layer. This layer contains a mixture of organic matter, minerals, water, and air that supports plant growth.

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1y ago

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What is a large layer of soil below the topsoil that begins with with s?

The subsoil.


What is the layer of soil the dead leaves form?

Dead leaves form the top layer of soil known as the organic or O horizon. This layer is rich in organic matter and essential nutrients for plants. As dead leaves decompose, they contribute to the soil's fertility and health.


What kind of erosion begins when runoff rainfall flows in a thin layer over the land?

Soil erosion.


Soil formation begins with the weathering of?

Soil formation begins with the weathering of underlying rocks and minerals, which breaks them down into smaller particles. This process involves physical, chemical, and biological actions that gradually create a layer of soil on the Earth's surface.


What is the last layer of soil to form a horizon?

The last layer of soil to form a horizon is called Horizon C. This layer is often referred to as the parent material, as it is made up of weathered rock fragments that have not yet fully decomposed into soil. Horizon C is the layer closest to the bedrock and has the least amount of organic matter.


What is the bottom layer of soil?

loam


Which layer in the soil provides the basic material that forms soil?

Top soil because it gives all other layers material and organics.


What layer layer of soil is the finest?

The topsoil is the finest soil layer. Soil 'layers' are called horizons.


What is an alisol?

An alisol is a form of soil with poor drainage and a dense subsurface clay layer.


What is the parent material layer?

The parent material layer is the unconsolidated material from which the soil develops. It is the source material that undergoes weathering processes to form soil over time. The characteristics of the parent material influence the properties of the soil that develops from it.


What is the name for a horizontal layer of soil?

There are four layers and the four layers are top layer called the organic layer, Upper soil layer, middle soil layer, and the last one is lowest layer.


What are the three layers that form the soil profile?

The three layers that form the soil profile are topsoil, subsoil, and bedrock. Topsoil is the uppermost layer rich in organic matter and nutrients, while subsoil is the middle layer with less organic material and more minerals. Bedrock is the solid rock layer found beneath the soil layers.