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A S and Mg B Mg and Na C P and S
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Solution
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98% of living body is formed of six elements carbon, hydrogen, nitrogen, oxygen and calcium and phosphorus. 63% of human body contains water, so oxygen and hydrogen are present in large quantity. Carbon is also one of the main element present in human body because it is the main unit of organic compounds. Nitrogen is present in proteins and nucleic acids like DNA and RNA. Calcium is the main structural component present in bones. It is most abundant mineral in living body. Phosphorus is present in ATP molecule and bones.Correct answer: (D) Ca and P
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