How does river differ from sea?

about the formation and geographical differences or:about the formation and geographical differencesor:A river flows from an underground source, usual

about the formation and geographical differences

or:about the formation and geographical differences

or:A river flows from an underground source, usually from a spring under a mountain and into an ocean or a sea. A sea is a moderately sized body of water. Most seas are usually bigger than Lake Superior.A sea is salty because it is apart of an ocean. A river is fresh water. A river always leads to a sea, the opening of the river is called the mouth. All rivers separate into many streams like roots. This is the other side of the mouth.

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