Dialysis performs the function of the kidneys if they've failed.
Answer:
If they follow Mrs.Gren
Explanation :Mrs.Gren which stands for Movement, Respiration, Sensitivity, Growth, Reproduction, Excretion and Nutrition. If it doesn't have these characteristics then its non- living.
The most well known answer according to my bio teacher is nitrogen
I think it's D ^-^
If it's not then it is B