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In nature, water continuously moves between Earth's surface and the air in a process called the water _____.
cycle
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Most of the Earth's water is contained in ____.
oceans
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Energy from the ____ evaporates water, making it rise.
sun
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Some water droplets and ice crystals form ____.
clouds
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When these grow large and heavy, the water falls to the Earth's surface as _______.
precipitation
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This can take the form of snow, rain, ____ or sleet.
hail
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Water can be stored as ______ or it can flow as _______.
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