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The Viking spacecraft were designed--in part--to search for life on Mars. Which of the following statements about the results of these experiments is true?1) Viking discovered a form of life on Mars that does not require water to thrive2) Viking did not discover larger life forms on Mars, but did find some Mars bacteria3) Viking did not discover life on Mars today, but did find a lot of fossils indicating Mars had life in the past4) Viking found that the surface of Mars in the two places it searched did not have any life or even life's building blocks5) Viking did find a whole Martian civilization, but they are hiding it from the news media
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