Dumb Question: If Earth is a Closed System and Were Running Out of Water, Wheres it All Going?
To answer this question, it helps to first have a rudimentary knowledge of the planet's hydrologic, or water, cycle. The water cycle, in essence, describes the processes by which large quantities of water move continuously through the Earth's oceans, land and atmosphere over short and long time scales. It is primarily dominated by the oceans — which account for 96% of the planet's water and where 86% of global evaporation takes place — though it has no defined starting or ending point.
