Question

What causes the salinity of ocean water to decrease?
the melting of icebergs
the evaporation of ocean water
the erosion of rocks and minerals
the warming of ocean water

Answer 1

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Answer 2

For decreasing the salinity dilution is required i.e addition of fresh water. Polar ice caps hold a large volume of fresh water. Melting of ice caps would lead to addition of fresh water and hence dilution