Which gas makes up the majority of the human body by weight in terms of elements?
A
Nitrogen
B
Oxygen
C
Carbon
D
Hydrogen
Correct Answer: Option B — Oxygen
Explanation:
Oxygen constitutes about 65% of the human body by mass, primarily as part of water molecules and organic compounds. It is essential for cell...
Oxygen constitutes about 65% of the human body by mass, primarily as part of water molecules and organic compounds. It is essential for cellular respiration, the process cells use to generate energy from nutrients.