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_________ account for the largest usage of groundwater in the United States. a. Water for livestock and poultry b. Domestic and municipal supplies c. Industrial uses d. Agriculture and irrigation After ice sheets and glaciers, __________ contains the next highest percentage of Earth's freshwater. a. the atmosphere b. lakes and rivers c. groundwater An unconfined water table is the _________. a. boundary between the saturated zone above and partly saturated zone below b. bottom boundary surface of the saturated zone above an aquitard c. boundary between the aerated zone above and saturated zone below d. boundary between the aerated and unsaturated zones

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1. GEOS 100 EXAM 3 d. Agriculture and irrigation Irrigation accounts for the largest use of ground water in the United States. Some 58 billion gallons of ground water are used daily for agricultural ... c. groundwater They are frozen fresh-water reservoirs that change volume in response to changes in ... of Earth's land surface, yet contains almost 87 percent of its fresh water. ... Although glaciers and ice caps make up less than 1 percent of Earth's .... b. bottom boundary surface of the saturated zone above an aquitard http://www.waterscape.org/projects/vanduo/dw_gen/grdshort/src/confin.htm water-bearing formation whose upper boundary is the water table (as opposed to a confining layer).