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 substances that help trigger and sustain the heart's electrical impulses. Potassium, sodium, calcium, and magnesium are necessary electrolytes in the blood that are vital to cell function. Studies show that blood pressure is related to dietary electrolytes. If you consume too much sodium, you can have high blood pressure.