Approximately___ people worldwide lack safe drinking water.
A) 100 million
B) 100,000
C) 500 million
D) 500,000
E) 1 billion
Correct Answer:
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Q71: The solid,impermeable layer that forms the boundary
Q72: A water-bearing rock stratum is called a(n)
A)water
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Q74: The High Plains Aquifer
A)has little importance as
Q75: The main source of groundwater is
A)hygroscopic water
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