Answer:
The respiratory system moves gases into and out of the blood. The circulatory system moves blood to all parts of the body. You have thousands of kilometers of blood vessels in your body and several hundred million tiny air sacs in your lungs
Explanation:
Circulatory system pumps blood around the body and the Respiratory system is to take oxygen in and expel carbon dioxide. Similarities: When deoxygenated blood enters the heart and it is then transported via pulmonary veins to be oxygenated by the lungs. Both systems involve oxygen for the body to work