37. most of the water on earth is located in the oceans and has a salinity of about 3.5%. which statement best explains why rain is fresh water and has a very low salinity? a. when water precipitates from oceans, most of the salt remains in the oceans. b. when water evaporates from oceans, most of the salt remains in the oceans. c. when water precipitates from clouds, most of the salt remains in the clouds. d. when water evaporates from clouds, most of the salt remains in the clouds.