REVIEW: Earth's Reservoirs

Earth's Reservoirs

The majority (97%) of all of Earth's water is found in the ocean. That means only 3% of Earth's water is freshwater. Other reservoirs of the global water supply include lakes, rivers, clouds, organisms, glaciers, and in the ground. Only a small percentage of Earth's water is available for use by humans. Humans use Earth's freshwater surface and groundwater resources for drinking and irrigation.

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