Six common bioelements account for what percentage of the total mass in the human body:

Correct answer: C. 99%

  • A. 10%
  • B. 90%
  • C. 99%
  • D. 9%

Explanation

The six commonest bioelements (oxygen, carbon, hydrogen, nitrogen, calcium, and phosphorus) account for about 99% of the human body's total mass.

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