The respiratory system works directly with the circulatory system to provide oxygen to the body. Oxygen taken in from the respiratory system moves into blood vessels that then circulate oxygen-rich blood to tissues and cells.
Answer:
i think is 12 to 19 sorry if im not right
Having stronger bones
Easier to do household chores
Lower blood pressure
Larger lung capacity
Convert or abuse over power and sterotyping if you can only choose one do sterotyping