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What are volcanoes? https://www.youtube.com/watch?v=K7Oq9_DU1Mc https://www.youtube.com/watch?v=lAmqsMQG3RM Effects of volcanoes https://www.youtube.com/watch?v=nwyoN3loJKw https://www.youtube.com/watch?v=tXHhceSYjtY Structure of the earth

via Volcanoes — ourgradeblog

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