Chapter 11.2

​ ​ (a)   provide drinking water for nearly half of the world’s people, while ​ (b)   provides drinking water for the other half

• Aquifers
• surface water

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NGSS.MS-ESS3-4

What aquifer supplies one-third of all the groundwater used in the United States?

• Great Plains

• Ogallala

• Central Valley

• Colorado

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NGSS.MS-ESS3-1

Define subsidence

• The ability to provide help to those that lack food and water

• Supporting your household by gathering water naturally

• sinking of the ground because of underground material movement

• The ability to trap water and use it within your ecological footprint

A structure built across a river to control the river’s flow or to create a reservoir

• beaver destruction

• a dam

• a bridge

• suspenion bridge

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What is a reservoir

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True or False : Reservoirs also have limited lifespans

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There are three major problems associated with the use of freshwater from the Colorado River Basin. What are they?

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Which single advantage and which single disadvantage do you think are the most important? Why?

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NGSS.MS-LS2-4

Purification of salt water or brackish (slightly salty) water by removal of dissolved salts

• distillation

• desalination

• reverse osmosis

• microfiltration

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Explain the California State Water Project

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