The principle of superposition dictates that
A. in a systematic survey, the location of a site is most likely near a river.
B. a fossil that is superimposed over a rock that is being dated by an absolute method is the same age as the rock.
C. certain radioactive isotopes decay at predictable rates that allow archaeological sites to be dated based on the amount of the isotope present.
D. in an undisturbed sequence of strata, the youngest layer is on the bottom.
E. in an undisturbed sequence of strata, the oldest layer is on the bottom.
Answer: E
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