World Geography
The mountains which come into being after the continental drift started, with the break up of the large land mass of pangola are

fold mountains
old mountains
volcanic mountains
young mountains

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

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

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