The salinity of the oceans has been relatively constant throughout much of geologic time because salt has been removed from seawater at roughly the same rate at which it has been added. True False

True<br /><br />The salinity of the oceans has remained relatively constant over geologic time because the processes that add salt to seawater (such as the weathering of rocks and the input from rivers) are balanced by processes that remove salt (such as the formation of evaporite minerals and biological uptake). This dynamic equilibrium helps maintain a stable salinity level in the oceans.