Question

there is a variation in the salinity of sea water​

Answer 1

Answer:

Salinity | Science Mission Directorate Evaporation of ocean water and formation of sea ice both increase the salinity of the ocean. However these "salinity raising" factors are continually counterbalanced by processes that decrease salinity such as the continuous input of fresh water from rivers, precipitation of rain and snow, and melting of ice.

mark me brainlist please must need

Answer 2

Salinity  is the saltiness or amount of salt dissolved in a body of water, called saline water . This is usually measured in   (note that this is technically dimensionless). Salinity is an important factor in determining many aspects of the chemistry of natural waters and of biological processes within it, and is a thermodynamic state variable that, along with temperature and pressure, governs physical characteristics like the density and heat capacity of the water.

A contour line of constant salinity is called an isohaline, or sometimes isohale.

Seawater typically has a mass salinity of around 35 g/kg, although lower values are typical near coasts where rivers enter the ocean. Rivers and lakes can have a wide range of salinities, from less than 0.01 g/kg[3] to a few g/kg, although there are many places where higher salinities are found. The Dead Sea has a salinity of more than 200 g/kg.[4] Rainwater before touching the ground typically has a TDS of 20 mg/L or less.[5]

please mark my answer as brainlieast . it is my humble request .