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A. Older sediment layers have equal amount of these reaioactive isotopes as that of the young ones
B. Older sediment layers have less amount of these reaioactive isotopes as that of the young ones.
C. Older sediment layers have greater amount of these radioactive isotopes as that of the young ones.
D. Older sediment layers did not have these radioactive isotopes

Correct Answer: Older sediment layers have less amount of these reaioactive isotopes as that of the young ones.

Last Updated: May 11, 2018