SCIENCE
ECOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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High Porosity
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Low permeability rate
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High capillarity
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Low infiltration rate
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Detailed explanation-1: -Sandy soil has the largest particles among the different soil types. It is dry and gritty to the touch. The particles have huge spaces between them and so it can’t hold on to water.
Detailed explanation-2: -Clay is the most porous sediment but is the least permeable. Clay usually acts as an aquitard, impeding the flow of water. Gravel and sand are both porous and permeable, making them good aquifer materials. Gravel has the highest permeability.
Detailed explanation-3: -Soil porosity refers to the fraction of the total soil volume that is taken up by the pore space (Nimmo, 2004). Mainly, pore spaces facilitate the availability and movement of air or water within the soil environment.
Detailed explanation-4: -Some surface soils in the area have a high clay content (very small particles), so they have high porosity but low permeability. Adding sand helps increase the average soil particle size, increasing the permeability.