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Biology · BIOMOLECULES

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A comparative elemental analysis of non-living matter (Earth's crust) and living matter (Human body) reveals distinct percentage abundances by weight. Which of the following elements exhibits a percentage weight of approximately 27.7% in the Earth's crust but is virtually negligible in the human body?

  1. A
    Calcium
  2. B
    Carbon
  3. C
    Silicon
  4. D
    Nitrogen

Correct answer · Option C

Silicon

Explanation

Silicon makes up 27.7% by weight of Earth's crust, whereas in the human body its presence is negligible.

Related questions

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