| Question 1: ________ by subsurface drainage | |||
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| Question 2: Turf cutting (Peat mining), subsidence and shoreline erosion gradually caused the formation of one large lake, the ________, or lake of Haarlem. | |||
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| Question 3: In the northern USA and ________, glaciation created numerous small lakes which gradually filled with humus to make marshes. | |||
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| Question 4: This completely secures them from the possibility of being damaged by the treading of horses or ________, and being so far below the small drains, clears the water finely out of them. | |||
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| Question 5: Geotextiles are synthetic textile fabrics specially manufactured for civil and ________ applications. | |||
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| Question 6: Site engineers work alongside ________ and construction managers, supervisors, planners, quantity surveyors, the general workforce, as well as subcontractors. | |||
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| Question 7: The area between ________, Haarlem and Leiden was, in prehistoric times swampland and small lakes. | |||
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| Question 8: Some of these were drained using open ditches and trenches to make mucklands, which are primarily used for high value crops such as ________. | |||
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| Question 9: Modern drainage systems incorporate geotextile filters that retain and prevent fine grains of ________ from passing into and clogging the drain. | |||
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| Question 10: In moist climates, soils may be adequate for cropping with the exception that they become waterlogged for brief periods each year, from snow melt or from heavy ________. | |||
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