Energy coupling the affect of the sun providing evergy to cells. Coupling is the thing that has the energy to provide it
That waste product would be carbon dioxide.
Answer - B. Kidney function is controlled by the blood's composition and hormones.
Reasoning - Well to start off the kidneys (main) purpose function is to clean your blood which is very Important with blood composition. Second It can also and will excrete it through urine which is pretty much what it does. Oh and also a little bit of hormones.