sodium & chlorine - the main two elements dissolved in seawater, sodium chloride - the chemical name for salt, rivers carrying sediment/minerals - the source of the salt in seawater that comes from land, minerals from underwater volcanoes - the source of the salt in seawater that comes from the ocean, salinity - a measure of the amount of salt in water, evaporation - At the hot equator, the seawater more salty because during ___ the salt is left behind., freezing - At the cold poles, the seawater more salty because during ___ the salt is left behing., rivers flowing in - ___ makes seawater less salty because freshwater is added. , sinks - Seawater that is more salty ___ because it is heavier (more dense)., rises - Seawater that is less salty ___ because it is more lightweight (less dense).,

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