Usually evaporation, but keep in mind that when water freezes (like the polar ice areas) the water molecules tend to crystallize with only water molecules, which pushes other stuff like salt out, resulting in higher salinity in the water that is left. A fascinating side article is in the link below.
In open ocean evaporation affects the salinity of the oceans, in closed oceans the lack of sunrays cause greater salinity levels.
Water
Water
The amount of salt in the water. Near the surface of the open oceans salinity is in general between 3.3% and 3.7%
Oceans are big water bodies. Salinity is due to the presence of minerals in water.
salinity
There are several factors that affect salinity. Some of the main factors include evaporation and precipitation which will affect the salinity of oceans and seas.
In any body of water; usually oceans.
i think no.
3.1-3.6% salinity
The world's oceans have a salinity of about 3.5%
AnswerAll oceans have salt in them. The average salinity of all oceans is 35 parts per thousand. Salinity does vary according to depth and location. Areas of the ocean located near onshore river runoff typically have a lower salinity. Areas near the tropics with high evaporation rates tend to have higher salinity.