The respiratory system of which of the following organisms relies on air sacs to move air through the lungs?

Question

Quizplus · Accepted Answer

Birds have air sacs in addition to lungs which help move air through the respiratory system. This is an adaptation that allows them to have a more efficient respiratory system, which is necessary for their high metabolic demands during flight. Mammals, fish, amphibians, and reptiles do not have air sacs.

The Respiratory System of Which of the Following Organisms Relies