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| Description: Soybean plants in nitrogen-poor soil show how root nodules affect growth. Only the darker green plants on the right were infected with nitrogen-fixing Rhizobium bacteria. Picture Stats: Views: 127 Filesize: 502.17kB Height: 1029 Width: 733 Source: https://biology-forums.com/index.php?action=gallery;sa=view;id=47880 |