FORESTRY
SOIL SCIENCE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Slow process
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Fast process
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Rapid process
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None of these
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Detailed explanation-1: -Soil forms continuously, but slowly, from the gradual breakdown of rocks through weathering. Weathering can be a physical, chemical or biological process: physical weathering-breakdown of rocks from the result of a mechanical action.
Detailed explanation-2: -Soil formation is a very slow process which maily happens due to weathering of rocks. Both biotic and abiotic components are responsible for the soil formation. Soil consists of biotic components like humus and abiotic components like minerals, rocks etc.
Detailed explanation-3: -Weathering is a very fast process of soil formation. Percolation of water is faster in sandy soils. Loamy soil contains only sand and clay. Topsoil contains the maximum amount of humus.
Detailed explanation-4: -(i) Weathering is a very fast process of soil formation.
Detailed explanation-5: -Explanation: Soil formation by the withering of rock is a slow process that takes years. Hence option a) is wrong. Loamy soil is a mixture of sand, silt and humus hence option c is wrong.