the respiratory system and the circulatory system work closely together to deliver oxygen to cells and to get rid of the carbon dioxide the cells produce.
Oh there have been plenty.
STI's for example including HIV (human Immunodeficiency virus) has definitely boosted the awareness of caution and avoiding risky behaviors in both sexual terms and reducing exposure to bodily fluid via blood in work, or IVDA (intravenous drug abuse) needle sharing.
Additionally potentially dangerous and very infectious diseases like the Flu have put an emphasis on the very basic disease prevention of washing ones hands, covering your sneezes, wearing face masks during exposure, and getting vaccinated as well.
And these are merely two examples of how hundreds of disease shaped out infection control protocols and norms.
Codependency is the correct answer, hope this helps
<span>The figure of the human body can be divided into 3 parts
namely Coronal plane, Transverse plane, and Sagittal plane. Sagittal Plane is the division of left and
right part of the human body. The
observer facing the figure can clearly see the divided parts equally using the
sagittal plane.</span>
