The 1991 Pinatubo Eruption in the Philippines Caused Brilliantly Colored

question 43

Multiple Choice

The 1991 Pinatubo eruption in the Philippines caused brilliantly colored sunrises and sunsets to be seen for the next few years. What caused this phenomenon?

• A)The eruptive cloud destroyed parts of the Earth's protective ozone layer.
• B)The eruption added large amounts of carbon dioxide to the atmosphere.
• C)Radioactive atoms blown into the atmosphere glowed red as they decayed.
• D)Sulfur dioxide and other erupted gases formed aerosols in the stratosphere.

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