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If We Visualize the Time That Has Passed Since the Origin

Question 31

Multiple Choice

If we visualize the time that has passed since the origin of our solar system and Earth,or about 4.6 billion years,as a one-hour clock,then out of one hour,prokaryotes have been present on the planet for about


A) 45 minutes.
B) 15 minutes.
C) 10 minutes.
D) 30 seconds.
E) 3 seconds.

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