Question

Salinity is low in the landlocked Baltic Sea

Answer 1

Because the supply of fresh water is high and evaporation is less in Baltic Sea

Answer 2

Baltic sea is located in temperate region and is a part of Northern Atlantic Ocean. Baltic sea is a land locked sea and hence ocean currents of Atlantic Ocean do not make change in its properties. Despite being a land locked sea, less temperature, less evaporation and good supply of fresh water due to melting of ice caps resulted in less salinity of Baltic Sea.