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On the surface of a sphere the shortest distance between two points is:
Q6: While quasars may have now vanished,the large
Q7: Decoupling refers to interactions between matter and
Q24: A _ is a system of government
Q25: Mercury's orbital precession is adequately explained by
Q26: What key event happened during the decoupling
Q27: Government can best be defined as the
Q30: Hubble's Law starts as a plot of
Q39: What are the three possible outcomes of
Q77: The majority of the mass of the
Q91: Due to the first strong commercial radio