Question

Which system is responsible for the exchange of oxygen and carbon dioxide?

1.Skeletal

2.CIrculatory

 3.Respiration

  4.Endocrine

Answer 1

Respiratory System... hope this helped

Answer 2

Hi there! I just finished studying the human body and so I can tell you with confidence that the Respiratory System is responsible for the exchange of oxygen and carbon dioxide. If you need more proof, the word Respiration itself means the action of breathing.