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The major sources of calcium and sodium in the oceans are primarily derived from the weathering of rocks on land, as minerals like calcite (calcium carbonate) and various sodium-containing minerals are broken down over time. Additionally, hydrothermal vents on the ocean floor release dissolved minerals, including calcium and sodium, into seawater. These elements combine with chloride and sulfate to form the salts found in ocean water, primarily sodium chloride (table salt) and calcium sulfate.

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3mo ago

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