While the salinity levels may vary greatly region to region, there is a consistent difference in density between the various latitudes. Suggest a possible explanation for this observation. SOMEONE PLS HELP THIS IS DUE TONIGHT IN LIKE AN HOUR

The world wars of the twentieth century immediately led to a. the establishment of a communist bloc in eastern europe b. the urbanization of europe’s societies c. an emphasis on humanism d. an emphasis on ties to greek and roman societies select the best answer from the choices provided. a b c d