Why do tropical areas near the equator and polar areas have higher salinity than other parts of the ocean? Question 4 options:

A: Because of higher rates of precipitation and glaciers melting in these areas add freshwater to the ocean.

B: Because of higher rates of evaporation and freezing in these areas that add freshwater to the ocean.

C: Because of higher rates of precipitation and glaciers melting in these areas that remove freshwater from the ocean.

D: Because of higher rates of evaporation and freezing in these areas that remove freshwater from the ocean.

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