The answer is urine because it is a liquid waste that filters blood.
Its too expensive or they feel they don't need it because they don't get sick or hurt or don't go to the doctor
Answer: (ILEORECTAL)
ILEORECTAL ANASTOMOSIS.
Explanation: Ileorectal anastomosis is a surgical procedure that involves the joining or connection of the terminal end of the small intestine, (ileum) to the rectum.
Ileorectal anastomosis is performed when there is inflammation of the colon,cancer of the colon,Crohn's disease(inflammatory condition of the linning of the digestive tract), chronic intestinal obstruction and chronic active disease like Epstein-Barr virus.
Ileorectal anastomosis is also indicative where there is a total removal of the colon.