how do circulatory and respiratory systems work together?

Question

a by exchanging oxygen and carbon dioxide
b by protecting against infections
c by digesting and absorbing nutrients
d by transporting hormones throughout the body

Answer 1

The correct answer is a) by exchanging oxygen and carbon dioxide.

The circulatory and respiratory systems work together primarily to facilitate the exchange of gases. The respiratory system brings in oxygen from the air and expels carbon dioxide from the body, while the circulatory system transports the oxygen to the cells and carries carbon dioxide back to the lungs to be exhaled.