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Choose the letter of the best answer. What should you use so that the geologic time scale covering Earth's 4.6 billion year history can be drawn as a straight line on a poster board one meter high? F 1 cm= 1 million years G 1 cm= 10,000 years H 1 cm = 100,000 years J 1 cm = 50,000,000 years
Among all the choices, it is best to use a scale of 1 cm = 50,000,000 years. This time scale will allow you to write the whole history of the Earth, which is around 4.6 billion years, in a poster board that measures 1 meter high.
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