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| Description: During the Cretaceous Period, "العصر الطباشيري الكريتاسي" carbon dioxide levels were >2,000 ppm. there were no permanent ice sheets. there were temperate forests on Antarctica. sea level was 100 meters higher than it is today. Picture Stats: Views: 377 Filesize: 181.74kB Height: 521 Width: 796 Source: https://biology-forums.com/index.php?action=gallery;sa=view;id=36232 |