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</html><description>Youth across Lewiston have been exploring the density of fluids, including experimenting to see how many fluids they could stack on top of one another. At the Root Cellar, Lewiston Housing Authority, and the Boys and Girls Club, the&#xA0;youth had five fluids to stack on top of one another. In the test tube above the [&hellip;]</description><thumbnail_url>https://extension.umaine.edu/4h/wp-content/uploads/sites/38/2016/11/IMG_8350.jpg</thumbnail_url><thumbnail_width>1000</thumbnail_width><thumbnail_height>1333</thumbnail_height></oembed>
