Salt concentration (salinity) of the sea measured in parts per thousand is

Options

A. `10 - 5`
B. `30 - 70`
C. `0-5`
D. `30 - 35`

Answer

D

Explanation

Salinity of water bodies is generally measured in parts per thousand. It determines what kind of organisms can live in it. Salinity of the sea is 30-35 parts per thousand, while for inland waters, and some lagoons is less than 5 and more than 100, respectively. Fresh water animals generally cannot live for long in sea water and vice versa because of osmotic problems.