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Hydrology is the scientific study of water on Earth and its distribution, movement, and properties. It encompasses various aspects such as surface water (oceans, rivers, lakes), groundwater, and atmospheric water. As a component of Ecology within Science and Earth Science, it investigates how water systems interact with the ecosystem, shaping the environment and affecting living organisms. Hydrology explores the dynamics between water and other elements like soil, rock, and life forms, providing insights into processes such as erosion, sedimentation, and nutrient cycling. It also addresses critical issues related to water resources management, including water supply, flood control, irrigation, and pollution.