General Knowledge - World Geography - Discussion

Discussion Forum : World Geography - Section 3 (Q.No. 16)
16.
The relative abundance of dissolved salts in seawater in descending order is as follows
chlorine, sodium, sulphate, magnesium, calcium, potassium
sodium, chlorine, magnesium, potassium, sulphate, calcium
chlorine, magnesium, calcium, sodium, potassium, sulphate
chlorine, sodium, magnesium, calcium, potassium, sulphate
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