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.
Electrolytes are important nutrients that help maintain your bodyâs fluid balance. Electrolytes are substances that conduct an electric current. In the body, they help to facilitate actions of the nervous system, maintain proper fluid and acid-base balance, and allow muscles to contract.