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Fossils and Earth's Past
Half-life
Half-life definition: The time it takes for half the atoms of a radioactive isotope to decay.
Related Terms
Absolute Dating
Carbon Film
Cast
Eon
Epoch
Era
Evolution
Extinction
Fossil
Geologic Time Scale
Index Fossil
Isotope
Law Of Superposition
Mold
Period
Radioactive Decay
Radiometric Dating
Relative Dating
Trace Fossil
Unconformity
Uniformitarianism
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