Multiple choice general knowledge Adult Human Body Requires how many pounds of Oxygen each day ? 77 pounds 88 pounds 90 pounds 96 pounds Reveal answer Fill a bubble to check yourself B Correct answer Explanation An average adult human requires about 550 liters (approximately 88 pounds or 40 kg) of oxygen per day. This is based on resting oxygen consumption of about 250-350 ml/min. 88 pounds is a scientifically reasonable estimate.