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Question

Match the following layers of soil with their respective properties.

A
Hardest layer
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B
Soft and porous
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C
Lumps of rocks
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D
Retains less water
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Solution

Based on the texture, colour, depth and chemical composition soil has different layers.
Uppermost layer is top soil which is soft and porous. It is rich in humus.

Second layer is subsoil which is hard and compact. It is rich in minerals.

Third layer is parent rock which is made of lumps of rocks with cracks and crevices.

Last layer is bedrock which is the hardest layer. It is very difficult to dig this layer with a spade.

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