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The Sahara Sea was the name of a hypothetical macro-engineering project which proposed flooding endorheic basins in the Sahara Desert with waters from the Atlantic Ocean or Mediterranean Sea.Which is saltier Dead Sea or Great Salt Lake?The Dead Sea has a salinity of 34 percent; the Great Salt Lake varies between 5 and 27 percent. Earth's oceans have an average salinity of 3.5 percent.Dec 27, 2014Once evaporated, a molecule of water vapor spends about ten days in the air. As water vapor rises higher in the atmosphere, it begins to cool back down. When it is cool enough, the water vapor condenses and returns to liquid water. These water droplets eventually gather to form clouds and precipitation.May 19, 2022~77% of precipitation falls over the ocean. ~10% of evaporated ocean water leads to precipitation over land. This equals the roughly ~10% of runoff that returns to the oceans.Apr 16, 2014