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An Introduction to the World's Oceans, 10/e
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Plate Tectonics

Internet Exercises
Under the heading "Background and Information," select "DESCRIPTION: Mount St. Helens Volcano." How many feet of elevation did the volcano lose in its 1980 eruption? What is the relationship between the oceanic trench that runs along the west coast of North America and the location of volcanoes linking Mount St. Helens?
Select "Section 1: Introduction, Perspectives, and Background." Read "A Fiber Optic 'Telescope' to Inner Space." How are volcanic processes and microbial activity related?