FORESTRY
SOIL SCIENCE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which layer of soil helps in purification of water?
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topsoil
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parent rock
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humus
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sub soil
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Explanation:
Detailed explanation-1: -Just below the topsoil layer is the subsoil layer. The subsoil may contain some broken down organic matter but it is mostly made of weathered rocks and clay minerals.
Detailed explanation-2: -The one nearest the surface is the “zone of aeration", where gaps between soil are filled with both air and water. Below this layer is the “zone of saturation", where the gaps are filled with water. The water table is the boundary between these two layers.
Detailed explanation-3: -Subsoil is used for the production of soil stabilized bricks. The organic material in topsoil interferes with the settling and hardening of the brick. The top . 5 meter of soil is usually topsoil and unsuitable.
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