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| Description: (a) Because O-16 is lighter than O-18, water vapor evaporated from the oceans is slightly enriched in O-16. Because most of this water eventually finds its way back to the oceans in rain and runoff, however, the ratio of the two isotopes in seawater is largely unaffected. Picture Stats: Views: 509 Filesize: 106.34kB Height: 678 Width: 1402 Source: https://biology-forums.com/index.php?action=gallery;sa=view;id=22522 |