REFERENCES:
Volcano
https://www.google.com.ph/#q=what+is+a+volcano%3F
What is a volcano?
http://www.ga.gov.au/scientific-topics/hazards/volcano/basics/what
Cinder Cone
http://study.com/academy/lesson/cinder-cone-volcano-definition-facts-examples.html
Composite Volcanoes
https://en.wikipedia.org/wiki/Stratovolcano
Supervolcanoes
https://en.wikipedia.org/wiki/Supervolcano
Classification of Volcanic Activity
http://volcano.oregonstate.edu/how-volcano-defined-being-active-dormant-or-extinct
Igneous Rocks
http://geology.com/rocks/igneous-rocks.shtml
Mt. Pinatubo Eruption
https://www.youtube.com/watch?v=WecgO8cBcZY
Volcanoes in the Philippines
https://www.youtube.com/watch?v=cLcDvz8QswM
Top 10 Biggest Active Volcanoes on earth
https://www.youtube.com/watch?v=IbuZI5vf8m0
https://www.google.com.ph/#q=what+is+a+volcano%3F
What is a volcano?
http://www.ga.gov.au/scientific-topics/hazards/volcano/basics/what
Cinder Cone
http://study.com/academy/lesson/cinder-cone-volcano-definition-facts-examples.html
Composite Volcanoes
https://en.wikipedia.org/wiki/Stratovolcano
Supervolcanoes
https://en.wikipedia.org/wiki/Supervolcano
Classification of Volcanic Activity
http://volcano.oregonstate.edu/how-volcano-defined-being-active-dormant-or-extinct
Igneous Rocks
http://geology.com/rocks/igneous-rocks.shtml
Mt. Pinatubo Eruption
https://www.youtube.com/watch?v=WecgO8cBcZY
Volcanoes in the Philippines
https://www.youtube.com/watch?v=cLcDvz8QswM
Top 10 Biggest Active Volcanoes on earth
https://www.youtube.com/watch?v=IbuZI5vf8m0