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23-09-2022
Chemistry

Answered

Why is it difficult to precisely date samples from after the 1940's?
A. It is too close to the present to get an accurate reading from a half-life.
B. There aren't any radioactive isotopes that have a half-life short enough to date something that recent.
C. A major solar flare in the 1940's contaminated everything on the surface at that time with extra radioactivity.
D. Nuclear bombs contaminated the samples with more radioactivity.

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