Which of the following is NOT a part of the hydrologic cycle?

Filtration is not a recognized component of the hydrologic cycle, which describes the continuous movement of water within the Earth and its atmosphere. The hydrologic cycle includes key processes such as evaporation, where water changes from liquid to vapor, condensation, where vapor cools and forms clouds, and precipitation, when water falls back to the Earth's surface in various forms like rain or snow.

While filtration is an important process in water treatment and purification systems, it does not occur as a natural cycle of water movement in the environment. Instead, filtration refers to the physical and chemical processes used to remove impurities or particles from water, which is distinct from the natural processes that comprise the hydrologic cycle. Understanding the specific roles of each of these processes is crucial for anyone studying or working in the field of water resources management.