Which of the following most logically completes the argument?
Bacteria might have developed on Mars early in its history.Theoretically, such Bacteria could have been to Earth by a meteorite.But , strains of bacteria from different planets would probably have substantial differences in protein structure that would persist over time.No two bacterial strains on Earth are sufficiently different planets.So if bacteria that originated on Mars were brought to Earth by meteorite either such bacteria died
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Bacteria might have developed on Mars early in its history.Theoretically, such Bacteria could have been to Earth by a meteorite.But , strains of bacteria from different planets would probably have substantial differences in protein structure that would persist over time.No two bacterial strains on Earth are sufficiently different planets.So if bacteria that originated on Mars were brought to Earth by meteorite either such bacteria died
...
