| 11. | Meat-eaters acquire the isotopic signatures of their prey.
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| 12. | This has led to the specialized field of isotopic stratigraphy.
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| 13. | The helium isotopic pattern was consistent with a radiogenic, crustal origin.
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| 14. | The isotopic signatures of the PBDEs themselves were not evaluated.
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| 15. | VSMOW remains one of the major isotopic water benchmarks in use today.
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| 16. | Another report in 1981 suggested that isotopic ages also indicate historic activity.
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| 17. | There can be inequivalent Legendrian knots that are isotopic as topological knots.
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| 18. | However, these are all isotopic and are considered equivalent.
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| 19. | The ?15N isotopic signature is enriched up the food web.
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| 20. | These grains preserve an isotopic record of the nucleosynthesis in individual stars.
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