Question

which of the following organ systems is responsible for exchanging co2 and o2 gas? (1 point)
reproductive system
lymphatic system
respiratory system
immune system

Explanation:

The respiratory system is responsible for the exchange of carbon - dioxide ($CO_2$) and oxygen ($O_2$) gases. Lungs in the respiratory system take in oxygen from the air and release carbon - dioxide out of the body.

Answer:

B. Respiratory System