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A volcano releases a towering plume of toxic ash and gases into the atmosphere. Which of these would best allow scientists to warn officials of a need for evacuation of
people living far away from the volcano?
A. a careful count of the number of people living near the volcano
B. an estimate of the number of gas masks available for emergency personnel
C. an accurate measurement of the height of the volcano
D. computer modeling of movement of the atmosphere
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A volcano releases a towering plume of toxic ash and gases into the atmosphere. Which of these would...
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