FORESTRY
SOIL SCIENCE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which is the upper, outermost layer of soil, usually the top 5-10 inches?
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Bedrock
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Topsoil
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Subsoil
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Partly weathered rock
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Explanation:
Detailed explanation-1: -The uppermost horizon is called the topsoil layer. The topsoil layer is a mixture of sand, silt, clay and broken down organic matter, called humus.
Detailed explanation-2: -O HORIZON-This is the top layer of soil that is made up of living and decomposed materials like leaves, plants, and bugs. This layer is very thin and is usually pretty dark. A HORIZON-This is the layer that we call “topsoil” and it is located just below the O Horizon.
Detailed explanation-3: -The topsoil is the uppermost layer of the soil. Below the topsoil is the subsoil. The third layer comprises of weathered rock material. Finally, the bottomost layer is called the bedrock or parent rock from which the soil is formed.
There is 1 question to complete.