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To study fluctuations in composition, samples of pumice were taken from 31 locations and cut in the shape of a cube. The length of the edge of one of these cubes is 4.000 centimeters. This cube has a density of 0.250 grams per cubic centimeter. What is the mass of this cube, in grams?
The recent events _____ the urgent need for better security measures.
Which word fills the blank?

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