Essay
Within human history, global effects on climate such as cooling due to the parasol effect have resulted from major volcanic activity.Examples include the eruption of Mount Pinatubo in 1991and Krakatau in 1883.Describe a time deeper in Earth's history when a much more severe outbreak of volcanic activity is likely to have caused the largest documented mass extinction event.
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Approximately 250 million years ago, the...View Answer
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