Why is the dead sea so much saltier than the ocean?
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The ocean’s salinity doesn’t change because, for the most part, it’s a closed system: any water that *leaves* the ocean eventually makes it *back* to the ocean, aside from very small amounts.
That isn’t true of the Dead Sea. The water that leaves the Dead Sea mostly does not ever return to it, but the salt it had dissolved sticks around. Like most lakes without an outlet, that means the Dead Sea steadily accumulates salt that has no good way to leave, making it extremely salty.
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