Out of the list of biological systems what are two of them and how are these two independent from one another?

the circulatory, respiratory, muscular, digestive, integumentary, endocrine, reproductive, and nervous systems. All of these systems have specific functions but they cannot function independently. They rely on all the other systems in order to work properly.

the answer is c most of the fortnite players usually buy v bucks to get the battle pass and other cosmetics but some players who are referred to as "no skins" don't   buy skins and are usually noobs.

the answer

b.) bowling ball