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Water is the most dense at 4 degrees Celsius (39.2 Fahrenheit); one liter at this temperature weighs almost exactly one Kilogram.

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Angel Falls, Venezuela is the tallest uninterrupted waterfall in the world. The water drops 3,212 ft (979 m).

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The blue whale is the loudest animal on earth. A blue whale call can travel hundreds of miles across the water, and it is louder than an F18 jet fighter.

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A city the size of New York consumes 1 billion U.S. gallons of water per day; enough to fill 1,480 Olympic sized swimming pools.

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