One downside to using hydro energy is that it can sometimes change the natural flow of the water which can make it possible to harm plants and animals in the water. It can also damage areas and wildlife, as when creating a hydro electric dam, areas must be flooded.
A Gastroenterologist (gastro means stomach. and enterolo means intestines) is a person who. takes care of patients with digestive system problems. He can take care of patients with a liver problem, but he doesn't specialize in it. A Hepatologist (hepato means liver) is a. doctor who specializes in the field of the. liver and does research and knows the lastest. medication available for those who have. disease of the liver.
The liver would be handled by a gastroenterologist (who does the complete digestive system, as well). The kidneys a nephrologist. However, after looking at a response below, I do see that a hepatolgist does specialize in the liver after looking it up.