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Portable Network Graphic  |  1991-05-30  |  2KB  |  284x306  |  1-bit (2 colors)

Labels: text | font | screenshot | line | diagram | white | plot
OCR: 5.0- Carbon, x10' metric tons/yr 2.5- 0.0+ 1890 1910 1930 1950 1970 1990 MAN'S PRODUCTION OF CARBON DIOXIDE Year 350- Atmospheric CO2 in ppn 340- 330- 320- 1960 -OTE 1970 1980 1990 MEASURED CARBON DIOXIDE LEVELS YEAR

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