Multiple choice

The adult human body requires about _____ pounds of oxygen daily.

  1. 88

  2. 80

  3. 77

  4. 66

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

While oxygen consumption varies by activity level, scientific estimates generally place the daily requirement for an average adult at approximately 88 pounds (or roughly 40 kg) of air, of which oxygen is a fraction.