Why is the surface salinity in the tropics so much higher than that of the equator or high latitudes?
A) There is a higher evaporation rate in the tropics.
B) There is a higher rate of precipitation in the tropics.
C) There are more continents in the tropics,and thus more sediment weathered.
D) There is a large influx of freshwater from rivers along the equator.

Question

Why is the surface salinity in the tropics so much higher than that of the equator or high latitudes? 
A) There is a higher evaporation rate in the tropics. 
B) There is a higher rate of precipitation in the tropics. 
C) There are more continents in the tropics,and thus more sediment weathered. 
D) There is a large influx of freshwater from rivers along the equator.

Quizplus · Accepted Answer

The tropics have a higher surface salinity due to higher evaporation rates compared to the equator or high latitudes. The warm temperatures in the tropics cause more water to evaporate, leaving behind salt and other minerals, which increases the salinity of the surface water. In contrast, the equator receives large amounts of freshwater from rainfall, while high latitudes have a lower evaporation rate due to cooler temperatures. Sediment weathering and freshwater influx from rivers are not significant factors affecting surface salinity in the tropics.

Why Is the Surface Salinity in the Tropics So Much