Supposedly about 2/3 of the earth's water was delivered through an asteroid, or comet.
water from the bodies of water such as oceans, lakes and/or rivers
there were meteorites, a lot of space debris and lightning and liquid water eventually made the oceans.
Meteorites containing ices bombarded the Earth during formation.
The significance of carbonate in meteorites from Mars is that they contain water.
Well water in the seas came from glaciers that melter over time....When the earth freezes it freezes the water into glacires which melt into water...but if your asking where it came from before the age of man then no one knows where it came from.
The significance of carbonate in meteorites from Mars is that they contain water.
It is carried to and across the continents by wind.
meteorites water flow and death
Earth was bombarded with meteorites that had gases in them that had hydrogen, and the hydrogen became massive clouds and it rained for years on end. then coacervates formed, which led to the formation of the cell, which led to the formation of life through natural selection.
Oceans have salt water.
When the Earth was formed, there obviously was a lot of water ice among the material that collected. This is believed to be a common component of the Oort Cloud, from which some meteorites come still. The various salts were derived by solution from the rocks of Earth.
One important reason is that Earth has the right temperature. Another is that - due to its formation history - it has lots of water in the first place.