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Second test - reservoirs or lakes • Groundwater is not...

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High points erode faster than low points A resource where “nature renews them more slowly than we use them” is: o Renewable o Nonrenewable Concentration of a naturally occurring material in or on the crust of the earth in such a form that economical extraction is currently or potentially feasible o Resource o Reserve Which of these bodies is not only a good supply of water, but has the longest residence time: o Oceans o Atmosphere o Rivers o Groundwater o Lakes o Glaciers One of these numbers represents the reserves of copper in the earth’s crust and one represents its resources. Which number mostly likely represents the reserves: o 3.7 x 10^9 o 5.2 x 10^12 About half of us get our drinking water from the ground (not rivers,
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Unformatted text preview: reservoirs, or lakes) • Groundwater is not just in the country, it can be in significant urban areas • The new river would run dry in a matter of weeks without groundwater • In many areas groundwater has become non-renewable • Groundwater supplies in Nevada and California are being slowly depleted • Rivers and streams in wet climates (Virginia) tend to be recharged constantly by the ground water table • Aquiclude- a material you cant get water out of (clay or shale layers that restrict groundwater flow) • Clays and shales have low hydrolic conductivity • Karst landscape has a bedrock that is limestone or dolomite...
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  • Spring '08
  • MESchreiber
  • groundwater flow, naturally occurring material, longest residence time, low hydrolic conductivity, significant urban areas

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