Well, here we go. I'm not an expert but i will try to help you. Take a look below: Hydrosphere is the water share in our planet, the totality of the oceans, seas, water of the continents, ice caps.Our planet contains about 16 billion cubes, that are 0,25% its mass. The bulk of this water (above 80 %) is in deep areas of the Earth - its mantle. The underground part hydrosphere includes ground, undersoil, the middle nonartesian water and pressure of water, fracture water and water caverns in easy soluble rocks (chalkstone,alabaster,etc.) For bulk of living organisms especially on initial stages of development a biosphere, the water was environment of formation and evolution. Water in biosphere is in sweep, takes rice in biological circulation substances (???).Water is the basis of live on the Earth. Without that (Victoria, you don't to repeat the word “water” all the time...) human civilization can't live because it is used by people not just for drinking, but also for providing sanitary-and-hygienic, household and domestic needs.