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Which term in the simplified Drake equations depends on sociological factors?
Q8: Given that our galaxy has a volume
Q10: What source of energy might keep water
Q15: Today, global average temperatures are estimated using<br>A)
Q21: Which of the features is seen on
Q24: The origin of the erosion features seen
Q26: During winter, the northern polar cap of
Q29: Which of the following is not a
Q41: Compared to the Earth, Mars has experienced
Q50: Orphan planets are<br>A) planets which have been
Q72: Each choice below describes how a few