The document summarizes the hydrologic cycle, which is the continuous movement of water on, above, and below the surface of the Earth. It discusses the key processes involved, including evaporation, transpiration, precipitation, runoff, and groundwater storage. The main points are: 1) Evaporation and transpiration transfer water from oceans, lakes, soil and plants into the atmosphere, where it accumulates as clouds. 2) Precipitation returns water to Earth as rain, snow, sleet or hail, completing the cycle. Most precipitation falls back into oceans but some falls over land as well. 3) Runoff from precipitation flows over land into streams, rivers, lakes and