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Stable isotopes do not change over time while radioactive isotopes decrease or decay over predictable periods.

To distinguish different isotopes from each other, scientists use special instruments called mass spectrometers. They are incorporated into the tissues of plants through soil and water and into animals through their eating, drinking and breathing.

Theoretically, such stable isotopes could include the radiogenic daughter products of radioactive decay, used in radiometric dating.

However, the expression stable isotope ratio is preferably used to refer to isotopes whose relative abundances are affected by isotope fractionation in nature. Measurement of the ratios of naturally occurring stable isotopes (isotope analysis) plays an important role in isotope geochemistry, but stable isotopes (mostly carbon, nitrogen, oxygen and sulfur) are also finding uses in ecological and biological studies.

Many are also unaware that Bible-believing Christians are among those actively involved in radiometric dating.

The term stable isotope has a similar meaning to stable nuclide, but is preferably used when speaking of nuclides of a specific element.

Common elements that possess isotopes include carbon, oxygen, hydrogen, and nitrogen.

These isotope systems for lighter elements that exhibit more than one primordial isotope for each element, have been under investigation for many years in order to study processes of isotope fractionation in natural systems.

The differences in the carbon-13 and nitrogen-15 content of foodstuffs and the preservation of these isotopes in bone collagen, provides a method for determining the dietary practices of humans and animals alive hundreds to tens of thousands of years before present.

The carbon-13 and nitrogen-15 information obtained from bone collagen can distinguish consumers of: CWe require a minimum of 2 mg of collagen to be supplied for duplicate analysis.

Further evidence comes from the complete agreement between radiometric dates and other dating methods such as counting tree rings or glacier ice core layers.

Many Christians have been led to distrust radiometric dating and are completely unaware of the great number of laboratory measurements that have shown these methods to be consistent.




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