Water is required in many ways and measures by living things. Water may be utilized by living things or maybe a habitat for them. water in our bodies is necessary for life. Without water, we can't survive. Without water, the organic, geological, and chemical cycles that make life possible would not work.so the amount of water is a living factor that influences the survival of an organism in an ecosystem
You can find anything here such as heath and other or you can try this website https://www.girlshealth.gov or even http://www.webmd.com i think web md is a good website