The circulatory system brings oxygen to the system, which it needs more of when it moves the body. * 5 points
Nervous
Endocrine
Integumentary
Reproductive
Skeletal
Digestive
Muscular
Excretory
Respiratory

Respiratory

Explanation:

The respiratory system is what helps you breathe, so the circulatory system would be sending oxygen there.

                                                        water

a colorless, transparent, odorless, tasteless liquid that forms the seas, lakes, rivers, and rain and is the basis of the fluids of living organisms.

                                                        halon  

any of a number of unreactive gaseous compounds of carbon with bromine and other halogens, used in fire extinguishers, but now known to damage the ozone layer.

                                                  dry chemical

extinguishing agent used on class a, class b, and class c fires.

                                                  carbon dioxide

a colorless, odorless gas produced by burning carbon and organic compounds and by respiration. it is naturally present in air (about 0.03 percent) and is absorbed by plants in photosynthesis.