Unsaturated - You may see water moving through but not completely filled with water. , Saturated - Completely filled, Surface water - bodies of water that are observable on Earth, Permeability - The ability of rock or sediment to let fluids pass through its open spaces. , Porosity - Small openings or spaces in material, Runoff - Water moving over land from a level of high elevation to low elevation, Aquifer - A body of permeable material where groundwater is present and fills all pore spaces, Groundwater - Water that is under ground, Water table - The layer of rock between unsaturated and saturated zones., Point Source pollution - A specific source of pollution that can be identified, Non-Point Source Pollution - When rainfall or snowmelt runs over land or through the ground, picks up pollutants and deposits them into rivers, lakes, wetlands, and coastal waters. , Watershed - An area separated by a divide in which water drains into a basin., Tributary - streams creeks, and rivers that feed into another body of water, Flood plain - An area that gets flooded when it rains a lot, Precipitation - water falling from the sky.,

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