The ____________________ is a means to attempt to calculate the number of communicative civilizations that exist in our galaxy.
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Q23: The portion of the electromagnetic spectrum between
Q27: The Miller experiment succeeded in creating _.
Q38: _ atoms serve as the basis or
Q39: Suppose we wish to travel to the
Q41: The most important quantity necessary for life
Q43: The _ is a region around a
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Q47: The failure of improperly adapted life forms
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