Filtration can be a simple technique used to separate insoluble solids from a mixture or suspension. It has a lot of everyday applications.
The Dead Sea is below sea level, this means that it does not drain so that although the water evaporates, the salt will stay, this means that the dead sea is a saturated solution. You can see this because salt crystals appear around the shore line. The oceans become salty for the same reason - soluble salts are washed in to the oceans by rive...