People can’t drink ocean water. However, in very dry areas near the ocean, people purify ocean water. They must use this process to obtain safe drinking water. The main substance that’s dissolved in ocean water is salt, and it must be removed. Salt water is classified as a mixture. This kind of mixture can’t be separated by . Instead, more expensive methods must be used. The first ocean water purification method requires heating. This method, , is based on the fact that water boils at a lower t
160 views
500 comments