1. Read the following passage and answer the question
If only planet Marts had water like Earth, we would settle there. Because the story of every settled civilization, the growth of their cities, their agriculture, is no small degree the story of their controlling water in prudently to make the land more prosperous and habitable. Human society is still as dependent on water as ever. Of the total water in the world just over 97 percent is safe, waters and only 2.7 percent is fresh, of the fresh water not frozen at the north or South Pole, 95 percent is ground water. Water pollution is a global problem. But it differs with levels of development in different countries.
What is dependent on water?