The calcium cycle is tightly coupled to the

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The calcium cycle is tightly coupled to the carbon cycle through calcium carbonate formation in ocean waters. Calcium ions combine with carbonate ions to form calcium carbonate, which is an important component of marine shells and skeletons. When these organisms die, their shells sink to the seafloor and become incorporated into sediment, where they can eventually be transformed into limestone. The formation and dissolution of calcium carbonate in the oceans play a significant role in regulating atmospheric CO2 and, thus, helps to maintain Earth's climate.

The Calcium Cycle Is Tightly Coupled to the