Ground-water sentence example

ground-water
  • The moisture in soil is derived from two sources--the rain and the ground-water.
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  • Above the level of the ground-water the soil is kept moist by capillary attraction and by evaporation of the water below, by rainfall, and by movements of the ground-water; on the other hand, the upper layers are constantly losing moisture by evaporation from the surface and through vegetation.
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  • When the ground-water rises it forces air out of the soil; when it falls again it leaves the soil moist and full of air.
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  • Above the level of the ground-water all soils contain air, varying in amount with the degree of looseness of the soil.
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  • The greater portion of this region is an open steppe, sandy in places and in others dotted with low volcanic hills, but with occasional ground water and in favourable seasons furnishing support for a considerable pastoral population.
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  • The ore is chiefly haematite, and has been developeci from antecedent ferruginous sedimentary deposits, through concentration and purification by ground water.
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  • The ground-water is, therefore, relatively very high and the capacity of the soil for further absorption proportionately low.
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  • This deep digging, however, which reached the sand of the original marsh, released much ground water and resulted in the permanent flooding of the site.
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  • Nearly all counties have a practically inexhaustible supply of ground water.
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  • That its storage has very greatly increased as cultivation has been extended (the prairie sod sheds water like a roof) is true; moreover, the spread of scientific principles of farming has increased the advantage derived from the ground-water stored.
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  • Removing the contaminated soils was technically impractical, and removing contaminated ground water did not address the source of the contaminants.
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  • Rain and ground water seep into the fabric of the buildings and force mosaics to bubble up.
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  • Garbage, chemicals, fertilizers, human and animal waste, and other toxic substances are dumped into bodies of water, seep into ground water supplies, or are deposited by the fall of acid rain.
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  • Septic tanks can leak, allowing sewage to leach, contaminating soil and ground water supplies.
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  • Even the most well-built and carefully monitored landfill will eventually leak and the community's ground water will become contaminated.
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  • The use of pesticides there has been so concentrated that it has been reported to contaminate the ground water.
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  • The pesticides and the chemicals also get into the ground water supplies in the nearby communities and cause widespread pollution of local waterways from rain water run-off.
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  • The addition of chemical phosphates to lawns and gardens is a major source of ground water pollution.
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