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Geography4Kids Quiz: Hydrosphere Overview
QUESTION 1: INCORRECT About two-thirds of the Earth is covered by water. That water might be found in oceans, seas, or lakes. Most of the water on Earth is salt water. Even though all organisms need freshwater, there is very little of it on the surface of the planet. Much of the freshwater is in frozen form (ice) at the poles. > Continue to Next Question > Restart Quiz
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