Q. Along the coasts, salinity is _____
Solution:
Salinity is relatively lower in areas where major rivers meet the oceans. For instance, at the mouths of rivers such as Amazon, Congo, Ganga, etc., the ocean surface salinity is found to be lower than the average surface salinity. Similarly, in the polar regions, when the glaciers melt during the summers, there is an influx of freshwater into the surrounding ocean which reduces the surface salinity.
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