I think it is d because the other places are of course wet lands.
aquifers yaaaaaaaay water from underground usually comes from aquifers
Answer and Explanation: The excretory system helps the respiratory system by getting rid of carbon dioxide. The respiratory system helps the excretory system by getting rid of CO2 from the body. They both need each other and if one or the other did not exist, we might've not been able to survive. Tis demonstrates how vital they are for the human body.
I need apjc what?? i dont get
