[Other sources] - Volcanic Activity on Mount Pinatubo
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one of the largest volcanic activities occurred in the Philippines in 1991
1 for Mt. Pinatubo's first eruption was from about 5,500 years ago
the Mt. Pinatubo eruption in 1990 triggered by a deep-focus 2
the volcanologists began to conduct a/an 3
4 fell on the local villages on 2nd April
a 'Level 5' alert means an eruption in 5
several Mt. Pinatubo eruptions were caused by the 6 of the summit
a tropical storm was passing by and 7 associated with the cinders in the air to form a substance called 'tephra' which fell on the 8 causing them to crush
large amounts of Sulphur dioxide gas was emitted, which combined with water and 9 to make sulphuric acid causing ozone depletion above antarctica
the overall effect of the cloud from this great eruption was the lowering of global 10
