The soil in a polder consists of a clay layer of 5m thickness, with aporosity of 50%, on top of a deep layer of stiff sand. The water level in the clay islowered by 1.5 m. Experience indicates that then the porosity of the clay is reducedto 40%. What is the subsidence of the soil?
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How have citizens in aralsk adapted to the changes brought about by the shrinking of the sea?
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Irrigation machinery has the amount of irrigated land in the us. a. doubled b. tripled c. quadrupled d. quintupled
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The soil in a polder consists of a clay layer of 5m thickness, with aporosity of 50%, on top of a de...
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