Question

Factors affecting salinity in surface layers of ocean include _____.

• A. Evaporation and precipitation
• B. Winds by transferring water to other areas
• C. The ocean currents
• D. Fresh water flows from rivers and freezing and thawing of ice
• E. All of these

Answer 1

The correct option is E All of these

Factors affecting salinity in surface layers of ocean include:

1. The salinity of water in the surface layer of oceans depends mainly on evaporation and precipitation.
2. Surface salinity is greatly influenced in coastal regions by the fresh water flow from rivers, and in polar regions by the processes of freezing and thawing of ice.
3. Wind, also influences salinity of an area by transferring water to other areas.
4. The ocean currents contribute to the salinity variations.
5. Salinity, temperature and density of water are interrelated. Hence, any change in the temperature or density influences the salinity of an area.