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Rivers and the flowing waters that feed them have many names— creek, stream, brook, rill, runnel, rivulet, watercourse. And many individual rivers have nicknames too, such as “Big Muddy” for America’s longest river, the Mississippi.
But whatever you call them, from the longest and strongest—the Amazon, Nile, and Yangtze—down to the smallest mountain creek, rivers are the lifeblood of the Earth.
