Importance Of Water

Yes. A normal human can survive 20 days without food but can survive only 2 days without drinking. Because if we did not take food, the fat present in our body, burn and it is utilized by our body. Due to the burning of fat molecules, our hunger suppresses. 
             Water is a very essential requirement for our body. If water is absent, tissues and other organs may damage quickly. So we cannot survive without water for longer time.