From the beginnings of life on Earth, it took less than a billion years for single- celled organisms to evolve to multicellular organisms.
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Q1: Comets were likely a major agent in
Q5: NASA has found definite proof for the
Q9: The Miller- Urey experiment relied on special
Q10: Of the terrestrial planets, Mars seems most
Q11: The transition from single to multicellular life
Q12: The Murchison meteorite, a carbonaceous chondrite, contained
Q13: Interest in life on Mars has died
Q16: The Miller- Urey experiment sought to recreate
Q17: A Martian meteorite has revealed carbonate rocks
Q18: Binary star systems are considered good candidates
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