Which process is NOT part of the Hydrologic Cycle?

The hydrologic cycle, also known as the water cycle, refers to the continuous movement of water on, above, and below the surface of the Earth. This cycle consists of several key processes that contribute to the distribution and movement of water in various forms.

Precipitation involves the falling of water from the atmosphere in various forms, such as rain, snow, sleet, or hail, replenishing water sources on the surface. Condensation is the process by which water vapor in the air cools and changes back into liquid water, forming clouds. Evaporation occurs when water from surfaces, such as oceans, rivers, and lakes, is heated and transforms into water vapor, rising into the atmosphere.

Filtration, on the other hand, does not have a place in the natural sequence of the hydrologic cycle. While it is an important process in the treatment of water—removing impurities from water for human use—it does not describe a natural phase of how water moves and transforms within the environment as precipitation, condensation, and evaporation do. Thus, filtration is the correct choice as it does not belong to the hydrologic cycle.