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(click here) CERCH – Center for Environmental Research and Children's Health. Your Watershed | Philadelphia Water Department. What is a Watershed?
A watershed is an area of land within which water from rain or snow drains into a body of water, such as a river, lake or ocean. Philadelphia is part of the Delaware River Watershed.
Trees. Buy, Use, Toss? | Science & Social Studies Curriculum | Facing the Future | Preview and Buy Curriculum. This download (a $19.95 value) is available for free thanks to generous contributions from the following funders: Crosby Philanthropy Fund, Johnson Family Foundation, Lawson Valentine Foundation, Martin-Fabert Foundation, Singing Field Foundation, The Story of Stuff Project - a project of the Tides Center, Wallace Global Fund, Weeden Foundation.
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