evaporation - When water changes from liquid to gas., transpiration - Evaporation from plants., run-off - When water flows downhill and collects in a body of water.., tributary - When a smaller stream meets a larger stream/river., watershed - Small area of land whose water flows to a common source., wetlands - An area of land that does not drain well and is saturated or full of water., pH - A measure of how acidic or basic a substance is., dissolved oxygen - The amount of oxygen is in water., temperature - A measure of how warm or cold something is., nitrates and phosphates - Excess amounts in water can lead to algae blooms and decreased oxygen levels. ,

Watersheds and Water Quality

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