The water cycle, also known as the hydrologic cycle or the H2O cycle, describes the continuous movement of water on, above and below the surface of the Earth. Although the balance of water on Earth remains fairly constant over time, individual water molecules can come and go, in and out of the atmosphere.

Water cycle
Water cycle
Water cycle
Global Water Cycle, The: Geochemistry and Environment
The global water cycle : geochemistry and environment
The Global Water Cycle: Geochemistry and Environment (Book)
Serpentine and the subduction water cycle
THE WATER-WATER CYCLE IN CHLOROPLASTS: Scavenging of Active Oxygens and Dissipation of Excess Photons
Evidence for intensification of the global water cycle: Review and synthesis
Stable Isotope Hydrology: Deuterium and Oxygen-18 in the Water Cycle
The SMOS Mission: New Tool for Monitoring Key Elements ofthe Global Water Cycle
Groundwater, in stable isotope hydrology: Deuterium and Oxygen-18 in the water cycle
Importance of rain evaporation and continental convection in the tropical water cycle.