Which organ system is responsible for the exchange of oxygen and carbon dioxide between the body and the environment?
A B C D
circulatory excretory immune respiratory
Question: Which organ system is responsible for the exchange of oxygen and carbon dioxide between the body and the environment?
(A) circulatory
(B) excretory
(C) immune
(D) respiratory

Answer: (D) respiratory
Answer: (C) immune
Question: Which organ system is responsible for the exchange of oxygen and carbon dioxide between the body and the environment?
(A) circulatory
(B) excretory
(C) immune
(D) respiratory
Answer: (D) respiratory