Why Does the Magma from Some Volcanoes Flow Smoothly and Relatively

question 2

Multiple Choice

Why does the magma from some volcanoes flow smoothly and relatively peacefully,while the magma from other volcanoes blasts forth violently?

• A) Differences in the chemical and mineral makeup of magmas
• B) Variations in the temperature,water and gas content,and viscosity of magmas
• C) Different geographic positions with respect to plate tectonic setting
• D) All of these are correct
• E) None of these are correct

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