Assume that human recorded history can be stretched back to 4600 years before the present. This is approximately what fraction of geologic time?

Name: Assume that human recorded history can be stretched back to 4600 years before the present. This is approximately what fraction of geologic time?
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Question

Quizplus · Accepted Answer

The Earth is approximately 4.6 billion years old. If human recorded history is about 4600 years, then it represents 1/1,000,000th of the Earth's history, making one millionth the correct fraction.

Assume That Human Recorded History Can Be Stretched Back to 4600