Porosity, a measure of the amount and size of spaces within an earth material (think pores)., Watershed, an area of land that contains streams and rivers that all drain into a single larger body of water (AKA Drainage Basin), Aquifer, a natural underground area where large quantities of groundwater fill spaces between rocks & sediments. It is available for use by using wells to pump out the water., Percolate, movement of water down through soil and its layers by gravity., Negative Human Impact, fertilizers, cleared land, barnyards, car washes, antifreeze, Groundwater, is water located beneath the earth’s surface such as in an aquifer or underground river., Permeability, the state or quality of a material or membrane that casuses it to allow liquids or gases to pass through it., Runoff, water that is moving above the surface of the land - especially where the ground is bare or already saturated with water ., Surface Water, is water collecting on the ground or in a stream, river, lake, wetland, or ocean., well, a hole drilled/dug into the ground to access groundwater from an aquifer, desalination, the process of removing salt from seawater

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