Q.

Which among the following elements is found in maximum percentage in the human body?

A. Carbon
B. Hydrogen
C. Nitrozen
D. Oxyzen
Answer» D. Oxyzen
Explanation: Most of the human body is made up of water, H2O, with cells consisting of 65- 90% water by weight. Therefore, it isn't surprising that most of a human body's mass is oxygen. Carbon, the basic unit for organic molecules, comes in second. 99% of the mass of the human body is made up of just six elements: oxygen, carbon, hydrogen, nitrogen, calcium, and phosphorus.
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