The main reason why the Supreme Court case Marbury v. Madison was significant is because B. it established the power of judicial review, since this allows the Supreme Court to check the legislature. This question is archived.
Water: Why We Need It. Hydration is important because the body is comprised mostly of water, and the proper balance between water and electrolytes in our bodies really determines how most of our systems function, including nerves and muscles, says Larry Kenney, PhD, a professor of physiology and kinesiology at Penn State.
Maintaining an Electrolyte Balance. The balance of electrolytes in your body can be changed easily by sweating, vomiting and diarrhea. That is why it is important to replenish them. Electrolytes are found in a well-balanced diet that is rich in vegetables and fruit. People who exercise regularly should replace their electrolytes by drinking sports drinks that are fortified with potassium and sodium.