World Geography
The relative abundance of dissolved salts in seawater in descending order is as follows

chlorine, magnesium, calcium, sodium, potassium, sulphate
chlorine, sodium, magnesium, calcium, potassium, sulphate
sodium, chlorine, magnesium, potassium, sulphate, calcium
chlorine, sodium, sulphate, magnesium, calcium, potassium

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World Geography
The process of evaporation of water in nature is one of the basic components of the hydrological cycle. The other process that is considered to be essential for the completion of hydrological cycle is the

flow of water in the sea
flow tide and ebb tide in a river
movement of water in the water table
movement of water vapour in the atmosphere

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