Why do volcanos erupte and how are they made?

Lori

See question 1 (Why do volcanoes erupt?) in 10. Volcanic Eruptions and question 2 (How are volcanoes formed) in 11. Volcanoes in General in the Top 101 Most Frequently Asked Questions about Volcanoes.(http://volcano.und.edu/vwdocs/frequent_questions/top_101/Top_101. html)

Sincerely,
Steve Mattox

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