Water is a substance or matter or element that matters to all life forms that are known to this day on earth, but not other plane. Water covers almost 71% of the earth's surface. There are 1.4 trillion cubic kilometers (330 million mil³) available on earth. Water is mostly in the sea (saltwater) and in the ice layers (at poles and mountain peaks), but can also be present as clouds, rain, rivers, lakes, moisture, and sea ice. Water in these objects moves along a water cycle, ie: through evaporation, rain, and water flow above the ground (runoff, covering springs, rivers, estuaries) into the sea.
