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Locate Your Watershed
Grades: PS/Pre-K to 12, Undergraduate to GraduateSubjects: Ecology & Ecosystems, Chemistry, Environmental Issues, Earth's Resources and 3 additional..Watersheds are those land areas that catch rain or snow and drain to specific marshes, streams, rivers, lakes, or to ground wate...Views: 0Favorites: 0Harry Hammond Hess - Spreading the Seafloor
Grades: 9 to 12Subjects: Chemistry, Geology & the Dynamic Earth, Weather, Climate & Atmosphere, Geography and 7 additional..This is an introduction to the concept of seafloor spreading proposed by Harry Hess in the early 1960's. This site offers multip...Views: 0Favorites: 0