Ask your own question, for FREE!
Biology 11 Online
OpenStudy (spicytaco1):

In which part of the human respiratory system does actual oxygen exchange take place? A. bronchi B. trachea C. diaphragm D. alveoli

OpenStudy (ookawaiioo):

Give her the D

Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!
Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!