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A chemical element, in the periodic table Calcium has the symbol Ca and atom number 20.
Calcium is an important component of a [healthy diet]?. Its minor deficit can affect bone and teeth formation. Its excess can lead to [kidney stone]?s. [Vitamin D]? is needed to absorb calcium. Dairy products are an excellent source of calcium.
See: Periodic table
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Last edited September 15, 2001 1:46 pm (diff)
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Wikipedia: Calcium