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:
B, C, E
Explanation:
I believe it's those ones, they seem to be the most obivious! :)
Gingivitis is inflammation in the gum tissues...itis meant inflammation..gingi means gum
