the degree of saltiness or concentration of salt solution in oceans or seas is referred to as -----

The degree of saltiness or concentration of salt solution in oceans or seas is referred to as "salinity of the ocean." Salinity is the measure of the amount of dissolved salts in seawater, usually expressed in parts per thousand (ppt). The average salinity of the ocean is about 35 ppt, which means that for every 1,000 grams of seawater, there are 35 grams of dissolved salts. The salinity of seawater is affected by various factors such as evaporation, precipitation, and the inflow of freshwater from rivers and streams. Understanding the salinity of the ocean is important because it plays a crucial role in regulating the Earth's climate and ocean currents, as well as affecting the distribution and behavior of marine organisms.