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      Displaying 2 resources
      • Thumb image for Thawing PermafrostResource Type: Website / HyperLink

        Thawing Permafrost

        Grades: PS/Pre-K to 12
        Subjects: Earth & Space Science, Ecology & Ecosystems, Mathematics, Chemistry and 10 additional..
        Because of a warming atmosphere, permafrost -- the frozen ground that covers the top of the world -- has been thawing rapidly ov...
        Contributor: Changing Planet - NBC Learn (NSDL Collection)
        Views: 0Favorites: 0
      • Thumb image for Windows to the Universe: The Greenhouse EffectResource Type: Website / HyperLink

        Windows to the Universe: The Greenhouse Effect

        Grades: TK/K to 12
        Subjects: Earth & Space Science, Chemistry, Earth's Resources, States of Matter (solids, liquids, gases) and 4 additional..
        At this site, users can read a basic explanation of the greenhouse effect, which is accompanied by a diagram illustrtating the c...
        Contributor: NASA Earth and Space Science Education Collection (NSDL Collection)
        Views: 0Favorites: 0