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The Curiosity rover has detected evidence of what kind(s) of chemical activity in Mars'ssoil?
Q1: Saturn's orbital semi-major axis is almost twice
Q9: We determine the structure of the Earth's
Q10: Because it can support huge Olympus Mons,
Q13: No evidence of impact craters has been
Q51: In noting that our world is "differentiated,"
Q61: How is it possible for Mercury and
Q70: Why does Mars appear red from Earth's
Q83: What makes Mimas a distinct moon?<br>A)It suffered
Q109: The largest volcano in the solar system,
Q124: A gravitational "sling-shot":<br>A)causes comets to crash into