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| Description: Calcium Carbonate, an Important Carbon Sink Many organisms incorporate calcium carbonate into their shells and skeletons (a), which then accumulate on the ocean floor (b). During Earth’s history, much of this material has been compressed into rock, like the famous white limestone cliffs that overlook the English Channel (c), thus becoming a major geosphere sink for carbon Picture Stats: Views: 885 Filesize: 269.55kB Height: 1080 Width: 1125 Source: https://biology-forums.com/index.php?action=gallery;sa=view;id=18966 |