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| Description: Astrolithium Microbes are the oldest form of life on Earth—and for about 75 percent of the planet’s history they were the only kind of life. Today multicellular species may top the food chain but they remain dependent upon microbes for survival. Should something happen to higher life-forms, on the other hand, microbes would probably exist quite well on their own, as they did for eons when the planet was young. Picture Stats: Views: 592 Filesize: 50.8kB Height: 450 Width: 600 Source: https://biology-forums.com/index.php?action=gallery;sa=view;id=12264 Keywords: Astrolithium |