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Q11: On the average,how much of the Sun's
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Q23: The oldest rocks of the oceanic crust
Q23: Which of the following best describes Shiprock,a
Q32: Why isn't manganese mined on the seabed
Q38: Earth receives energy from the Sun in
Q47: _ has an average density of 2.7
Q116: The Coriolis effect causes ocean currents in
Q117: The beginning of the Precambrian era is
Q119: Anyone who has ever gone swimming in