Multiple choice general knowledge

Human Brain intakes ----% of oxygen from human breathes

  1. 40%

  2. 10%

  3. 15%

  4. 20%
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The human brain consumes about 20% of the body's oxygen despite being only 2% of body weight. This high metabolic rate supports continuous neural processing. The 40% and 15% figures are commonly cited but incorrect.

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