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| Description: The change from about 280 ppm in 1800 to 380 ppm today reflects the impact of the Industrial Revolution and the increased use of fossil fuels. Picture Stats: Views: 545 Filesize: 126.41kB Height: 1080 Width: 1342 Source: https://biology-forums.com/index.php?action=gallery;sa=view;id=22528 |