The answer to the question '<span>In a series of undisturbed rock layers where shale lies between sandstone below and limestone above, the __." would be limestone is youngest. Out of all the rock layers, the limestone is dated to be the youngest of all.</span>
Answer: The stratification of earth into its geologic layers was brought about by th e formation of the earth iron core.
Explanation:
The answer is Eficiency=T<< Tox100
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