6. How does circulatory system related to the respiratory system?
A. Circulatory system supplies oxygen to the respiratory system
B. Circulatory system supplies carbon dioxide to the respiratory system
C. Respiratory system supplies oxygen to the circulatory system
D. Respiratory system supplies carbon dioxide to the circulatory system
![6 How Does Circulatory System Related To The Respiratory SystemA Circulatory System Supplies Oxygen To The Respiratory SystemB Circulatory System Supplies Carbo class=](https://ph-static.z-dn.net/files/dca/6a2c3c4df4f1fa38799fb47ee5585f05.jpg)