Why is water important? All living things need water in order to carry out their body processes. In addition, many living things live in water Body processes Without water neither you nor an apple could survive. Habitats An organism’s habitat is the place where it livesand obtains all the things it needs to survive. Where is water found? Most of Earth’s surface water is salt water found in oceans. Only 3 percent is fresh water Oceans We have four oceans: Atlantic Pacific Indian Artic Rivers and lakes Groundwater Water that fillls the cracks and spaces in underground soil and rock layers is called groundwater. What is the water cycle In the water cycle water moves between land, living things, bodies of water on Earth surface, and the atmosphere.