Tại sao nước biển mặn?

Salt in the sea, or ocean salinity, is mainly caused by rain washing mineral ions from the land into water. Carbon dioxide in the air dissolves into rainwater, making it slightly acidic. When rain falls, it weathers rocks, releasing mineral salts that separate into ions. Muối trong biển, hay độ mặn đại dương, chủ yếu…

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