The circulatory and respiratory system are connected at the lungs. The circulatory needs oxygen form the lungs to pump the blood around the body and the respiratory system supplies the oxygen and gets the oxygen from the air into your bloodstream.Sep 23, 2013
Your respiratory system transfers oxygen to your circulatory system.<span />
What’s the topic for the speech though?
Cause they never knew how to cure them some were airborne also
and rats and fleas if your near the black plague area
