| 11. | Kinetic fractionation will cause the isotope ratios to vary between localities within that area.
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| 12. | Sediments at the site were originally carbon isotope ratios.
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| 13. | ;Ptolemy : An instrument measuring stable isotope ratios of key volatiles on the comet's nucleus.
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| 14. | An increased / isotope ratio in a parent compound thus provides direct evidence of degradation.
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| 15. | Also a study involving stable isotope ratios might include the molecule 18 O 16 O.
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| 16. | Different photosynthesis pathways can be identified by carbon isotope ratios, Evershed said in an interview.
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| 17. | Isotope ratios are typical of Central Volcanic Zone volcanoes.
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| 18. | Hosler said, " because Ecuadorian and Mexican ores are very different in their isotope ratios.
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| 19. | The games'doping control center will use a carbon isotope ratio mass spectrometer, said Torpong Sewatarmra.
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| 20. | Chondrite meteorites are classified using the oxygen isotope ratios.
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