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Portable Network Graphic  |  1991-05-30  |  3KB  |  512x342  |  4-bit (3 colors)

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OCR: 12 GREENHOUSE GASES In order of warming contribution: Greenhouse Gas .. conc. in ppM CO2 (carbon dioxide) 353 CH4 (methane) 1.7 CF2012 (CFC-12) 3.8x10-4 CFC13 (CFC-11) 2.4x10-4 N20 (nitrous oxide) 0.31 03 (trop. ozone) varies CFC-11 105 CFC-12 Percent Increase from 1975 to 1985 MEASURED CFC INCREASES

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