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Oceanography

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Multiple Choice

Which of the following sequence correctly represents the percentage of given salts in sea water in decreasing order?

  1. Magnesium chloride - Sodium chloride - Magnesium sulphate - Calcium sulphate
  2. Magnesium sulphate - Magnesium chloride - Calcium sulphate - Sodium chloride
  3. Sodium chloride - Magnesium chloride - Magnesium sulphate - Calcium sulphate
  4. Sodium chloride - Magnesium sulphate - Magnesium chloride - Calcium sulphate
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