Hello, I need help with this question: When and why did eruptions occur with the volcanoes Pinatubo, Tambora, and mount toba. thanks

Answer 1

Check these sites.

http://volcano.und.edu/vwdocs/volc_images/southeast_asia/philippines/pinatubo.html

http://geography.about.com/od/globalproblemsandissues/a/pinatubo.htm

http://www.earlham.edu/~ethribe/web/tambora.htm

http://volcano.und.edu/vwdocs/volc_images/southeast_asia/indonesia/toba.html