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bloodrain
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Eric is considering building a scale model of the geologic time scale. If the timespan occupied by modern humans is represented by a length of 1 cm on his model, how long will the model have to be to represent Earth's entire history?
nearly 230 m
nearly 230 cm
about 4.6 billion cm
about 4.6 billion m
 one year ago
 one year ago
bloodrain Group Title
Eric is considering building a scale model of the geologic time scale. If the timespan occupied by modern humans is represented by a length of 1 cm on his model, how long will the model have to be to represent Earth's entire history? nearly 230 m nearly 230 cm about 4.6 billion cm about 4.6 billion m
 one year ago
 one year ago

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