The respiratory and circulatory systems both involve

Bringing oxygen and nutrition to the cells

Explanation:

As one of the most important parts of the body, the respiratory system( organs and tissues that help to breathe) and circulatory systems( blood vessels that are carrying blood from and to the heart) are helping the human body to breathe and function.

They are both having a big role which is bringing oxygen and nutrition to the cells and they are both working together.

answer; /// the above statement is (false);