To calculate: The percentage or fraction of geological timescale that is represented by the recorded history of human kind.
Answer to Problem 1GST
The percentage of geological timescale represented by the recorded history of human kind is
Explanation of Solution
Given info:
The length of recorded history for humankind is about
We know that
The expression for calculating the fraction of geological timescale represented by the recorded human history,
Substitute
The expression for calculating the percentage of the fraction denoted by recorded human history,
Substitute
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Chapter 1 Solutions
ESSENTIALS OF GEOLOGY MASTERING ACCESS