The overall movement of water through the atmosphere, land, and oceans is known as the what?

• A. Hydrologic cycle
• B. Fluxes
• C. Residence time
• D. Reservoirs

Answer: (A)

The hydrologic cycle describes the overall movement of water through the atmosphere, land, and oceans. It explains how water evaporates from bodies of water, rises as vapor, condenses into clouds, precipitates back to the surface, and then travels through rivers, soils, and groundwater before the cycle repeats. This continuous loop links air, land, and sea and governs how freshwater is distributed and renewed on Earth. The other terms refer to parts or aspects of this system: fluxes are the rates at which water moves between reservoirs, residence time is how long water stays in a given reservoir, and reservoirs are the storage places where water is held.