Which element has the most % in human body?

Correct answer: A. Oxygen 65%

  • A. Oxygen 65%
  • B. Calcium 75%
  • C. Hydrogen 10%
  • D. Carbon 18%

Explanation

Oxygen is the most abundant element in the human body by mass, largely because it forms part of water and many organic compounds. It accounts for approximately 65% of body mass.

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