Fill in the Blanks WaterOnline version Complete the summary with the words by Javier Grande 1 rain lakes salt oceans rivers groundwater snow mountain Most of the water that covers the Earth's surface is water in seas and . Fresh water comes from , snow and ice . On land , fresh water forms streams and that flow down from high land into , seas and oceans . At the Poles and on peaks , frozen fresh water is found in the form of or ice . There is a lot of under the Earth's surface .