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Q1: If you could modify or replace the
Q14: The most dense objects known are black
Q15: Which of the following is the poorest
Q19: Our galaxy is currently absorbing other galaxies.
Q30: Thunder and lightning are normally associated with
Q38: The name _ climate is often used
Q54: The atmosphere is an efficient absorber of
Q58: The Moon has highland areas which approach
Q68: Bright centers of solar activity are called
Q71: Patterns or configurations of stars named in