Practice Quiz

Green Plumbing

Category - Caring for Our Water

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Approximately how much fresh water worldwide is stored in the ground (first number) and in glaciers and ice caps (second number), in millions of cubic miles?
  1. 7 and 2
  2. 2 and 7
  3. 1 and 3
  4. 3 and 1
Explanation
Answer: C - While the ground throughout Earth contains more than two million cubic miles of fresh water, more than triple that amount (seven million cubic miles) is contained in glaciers and ice caps. Some of the groundwater is usable; none of the glacial water is usable in its frozen state.
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