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12 September, 09:35

As of 2010, there are 118 known elements. of those, how many are believed to be essential to human biology?

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  1. 12 September, 09:42
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    From the 118 known elements, 25 elements are believed to be essential to human biology.

    Out of 25 elements, 6 elements namely - carbon, oxygen, hydrogen, nitrogen, calcium and phosphorus, they make up about 99% of the human body. Some other elements like - potassium, sulfur, sodium, chlorine, and magnesium, they are also found in the human biology.
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