Freshwater (Lakes and Rivers) and the Water Cycle
https://www.usgs.gov/special-topics/water-science-school/science/freshwater-lakes-and-rivers-and-water-cycle
webJun 8, 2018 · The definition of freshwater is water containing less than 1,000 milligrams per liter of dissolved solids, most often salt. As a part of the water cycle, Earth's surface-water bodies are generally thought of as renewable resources, although they are very dependent on other parts of the water cycle.
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