how much liters of ground water is present on earth????
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Ans=The oceans contain about 97 percent of the Earth's water, but that, of course, isn't drinkable. About 2 percent is frozen at the poles or in glaciers. Of the remaining 1 percent, almost all of it — about 96 percent — is groundwater, according to the National Oceanic and Atmospheric Administration (NOAA).
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