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The United States Geologic Survey (USGS) estimates there to be 326,000,000 cubic miles of water on the planet. A cubic mile can hold a little more than 1.1 X 1012 gallons.

The USGS also estimates that 96.5% of that water is in the planets oceans.

96.5%

X (1,100,000,000,000 gallons per cubic mile)

X (326,000,000 cubic miles)

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= 346,049,000,000,000,000,000 gallons.

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Velda Spinka

Lvl 10
4y ago

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