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Which of the following spacecraft is NOT leaving the solar system?
Q3: Photosynthesis, once it was planet-wide, changed the
Q10: When astronomers have examined rich clusters of
Q13: The heart muscle's dedicated system of blood
Q15: Which of the following statements about the
Q21: Which of the following is a biomarker
Q24: "As a result of," "because," and "since"
Q26: The new instrument that made it possible
Q30: Which of the following is NOT one
Q46: When the BeppoSAX satellite, together with telescopes
Q67: _ is the inability of the heart