Ninety-six per cent of salt water is pure water. There is 3 per cent common salt in it. The remaining one per cent is made up of more than 80 elements, including sulphate, magnesium, bromide, calcium, potassium, strontium, boron, fluoride and gold. Some seas have more salt than others.

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Ninety-six per cent of salt water is pure water. There is 3 per cent common salt in it. The remaining one per cent is made up of more than 80 elements, including sulphate, magnesium, bromide, calcium, potassium, strontium, boron, fluoride and gold. Some seas have more salt than others.

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