The salinity of seawater at the poles is:
A) high due to evaporation.
B) low due to precipitation.
C) high due to freezing.
D) low due to river input.
E) similar to the open ocean.

Question

Quizplus · Accepted Answer

The salinity of seawater at the poles is high due to freezing. When seawater freezes, the water molecules form ice, which leaves behind the dissolved salts, increasing the concentration of salt in the remaining seawater. This process, known as brine rejection, results in a higher salinity level in the polar ocean waters.

The Salinity of Seawater at the Poles Is