Fresh+water+vs+Salt+water

==Salt water is water that contains a certain amount of salts, 3.5% of water contains salt. The reason why the ocean is salty is because when water flows through rivers it picks up salts and then the river flows into the oceans and seas with the salt that it carried along the way, the water in the oceans annd seas only leaves by evaporating, when water evaporates the salt stays behind so this its practically saying that salt is always coming in but it never leaves. unlike salt waters, fresh water does not contain much salt, only 1% of fresh water has salt because fresh water its constantly getting hit by more fresh water, like glaciers and rain.==



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