Rivers of Water | First things first
First things first
The source of a river's waters, in fact, all the waters of the world, is the hydrologic cycleContinual movement of water from the atmosphere to Earth's surface through precipitation and back to the atmosphere through evaporation and transpiration., which circulates and distributes the fresh water on Earth. To examine this cycle, we might begin with the sea. The Sun warms the ocean water, causing some of the surface water to evaporate and rise into the air as water vapor. Upon meeting cooler air above, this water vapor condenses and forms rain droplets, or it freezes into ice crystals. The droplets or crystals eventually fall again as precipitation: rain, snow, or hail. Some precipitation falls back into the sea, while some falls on land where it sinks into the ground, or runs into rivers, lakes, ponds, and streams.
French scientist Claude Perrault...
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