Which of the following groups of animals is most efficient at extracting oxygen from the atmosphere?

Question

Quizplus · Accepted Answer

Birds have a highly efficient respiratory system that allows them to extract oxygen from the atmosphere more effectively than the other groups listed. Their unique air sac system allows for a continuous flow of air through their lungs, ensuring that they can extract a high amount of oxygen even during the high metabolic demands of flight.

Which of the Following Groups of Animals Is Most Efficient