Which describes an underground layr of porous and permeable rock that holds water?
A. reservoir
B. deposit
C. subsidence
D. aquifer
D. aquifer
Which can be excluded from the list of underground materials that holts water in the Ogallala aquifer?
A. silt
B. granite
C. sand
D. gravel
B. granite
Which describes the sinking of the surface when a large amount of water leaves the aquifer?
A. drought
B. subsidence
C. mining
D. precipitation
B. subsidence
Which becomes a problem when mining groundwater continues?
A. It becomes too expensive to maintain the aquifer.
B. It causes porous rock to suddenly harden.
C. It adds pollution to wells.
D. It removes water more quickly than it can be replaced.
D. It removes water more quickly than it can be replaced.
What might happen if there is excessive water removal from the Central Valley Aquifer in California?
A. It can transform California completely to a desert.
B. It could force tectonic plates to move, resulting in volcanoes.
C. It can cause severe weather changes in California.
D. It could cause faults to be less stable, resulting in earthquakes.