Watershed - an area or ridge of land that separates waters flowing to different rivers, basins, or seas, Runoff - occurs when there is more water than land can absorb, Turbidity - the quality of water being cloudy, opaque, or thick with suspended matter, Topography - the shape and features of land surfaces, Divide - The imaginary line where water goes towards one watershed or another (the roof peak), Humidity - the amount of water vapor in the atmosphere, Salinity - the amount of dissolved salts that are present in water, Dissolved oxygen - a measure of how much oxygen is dissolved in the water, Hydrologist - A person who studies water in a certain area that pertain to the supply and quality, Point source pollution - a single identifiable source of pollution such as a pipe or ship., Non point source pollution - Many different sources of pollution that end up in water or are carried through the atmosphere, Aquifer - A pocket of water underground absorbed into soil., biotic factor - A living thing that is part of an ecosystem, abiotic factor - A nonliving factor that affects an ecosystem (ie. climate, pollution) ,

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