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Q15: The line separating the dark half of
Q26: The major source of oxygen in Earth's
Q28: The term_ describes the era of ancient
Q30: When <i>speed divergence</i> occurs in the upper
Q33: The movement of Earth in its orbit
Q34: Advective fogs form when warm, moist air
Q50: By the close of the Paleozoic, all
Q75: What is the age of Earth accepted
Q83: In correct order from the center outward,
Q95: Examine the words and/or phrases below and