Soil and Rocks: Soil Layers

The video tutorial explains the different layers of soil observed when digging a hole. It highlights two main layers: topsoil and subsoil. Topsoil is rich in humus, which consists of decaying plant and animal matter, providing essential nutrients for plant growth. The depth of topsoil can vary significantly. Below the topsoil is the subsoil, which is lighter in color and lacks humus. Beneath the subsoil lies the bedrock, a solid rock layer.

How does the depth of topsoil vary?

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What is the layer beneath subsoil called?

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