Gow to refine Calcium?
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Calcium is a chemical element. It is represented by the symbol "Ca. Calcium is less chemically reactive than alkaline metaps and than the other alkaline earth metals. The atomic number of this element symbol is 20 and its relative relative atomic mass is 40. In biological term, it is found in foods such as milk and cheese. It helps to make bones and teeth strong.
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write a letter to your aunt telling her what you want on birthday
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