Surveys show that 3% to 5% of Americans believe UFOs visit Earth from alien worlds.
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Q11: Astrobiology is the study of life in
Q12: Humans are the most common form of
Q13: The Viking Landers found definitive proof of
Q14: Astronomers have carried out a number of
Q15: A large part of NASA's funding currently
Q17: ALH 84001 is the only known specimen
Q18: On Earth,gray hematite is found in places
Q19: A project called SETI@home uses a data
Q20: The most uncertain variable in the Drake
Q21: The SNC meteorites are
A) granitic rocks from
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