The global hydrological cycle is of enormous importance to life on earth.
1A - A closed system 1B - Importance and size of fluxes 1C - The global water budget and non-renewable stores
Water is essential to life on earth. It is important that we understand its global circulation and distribution, as well as the human demands on it. It is a scarce resource and therefore needs to be carefully managed. Failure to do so promises water insecurity...