What is the average salinity of sea water?
- A. 1.5%
- B. 3.5%
- C. 2.5%
- D. 2%
The salinity of the sea water means the presence of dissolved salts in the seawater. The average salinity of seawater is 35 ppt. / 3.5% .A simple way to determine the amount of salinity in seawater is to evaporate one kilogram of seawater and finally to weight the residue in grams.