Most of the approximately 3,300 historic eruptions lasted ____

A)a few days
B)from less than one month to six months
C)one to two years
D)more than two years
E)more than 20 years


B

Environmental & Atmospheric Sciences

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What are three characteristics of communism, and how did they impact the industry and agriculture of eastern Europe?

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Which of the following is most likely to be associated with a confined aquifer?

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