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建立人际资源圈Groundwater
2013-11-13 来源: 类别: 更多范文
Groundwater
What is groundwater' Groundwater is water that exists beneath the surface. When it rains, water filters into the ground and percolates through the soil until it reaches a depth where all of the space is filled by water. Ground water can flow horizontally and vertically at a rate influenced by the area it is in. Groundwater is found in aquifers, geologic formations where a significant amount of water can be stored, transmitted, or supplied to well or a spring.
The quality of groundwater and surface water are intimately linked. Eventually , some ground water flows to the surface and feeds into lakes and streams.
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