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Cosmic dust melts upon entry into the Earth's atmosphere because of friction.
Q5: If the magma reaches the surface,it forms
Q6: Each year the Earth is shaken by
Q12: Earthquake-induced ground motions cause buildings to sway.In
Q23: Two laws that provide wide-sweeping tools for
Q29: Increasing temperature causes rock to expand in
Q33: Which of the following rules applies to
Q52: Of the disaster scales discussed in the
Q60: The origin of the holes on this
Q62: In Canada,thousands of mass movements occur every
Q67: Statistically,the 100-year flood has a _ chance