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.
These are called electrolytes.. Examples of electrolytes are potassium and chloride. These electrolytes exist in their ion state in the body fluids. This means that each ion can combine with one or more ions to form needed body compounds or can produce electro-chemical equilibrium (or balance).