All water Oceans (97.5%) Fresh water Groundwater (20%) Surface fresh water Ice caps and glaciers (79%) Soil moisture (38%) Lakes Fresh water (2.5%) (52%) Surface fresh water (1%)- Rivers (1%) FIGURE 12.2 Only 2.5% of Earth's water is fresh water. Of that 2.5%, most is tied up in glaciers and ice caps. Of the 1% that is surface water, Water within Atmospheric water vapor organisms (1%) (8%) most is in lakes and soil moisture. Data from United Nations Envronment Programme (UNEP) and World Resources Institute.

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