World Geography
The process that creates a sub layer, which is white to gray in colour and composes of silica sand in the A horizon is called

gleisation
podsolosation
calcification
laterisation

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

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

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