Based on feasible limits for the concentrations of greenhouse gases other than CO2 1 calculate that this target requires holding CO2 concentrations to about 400 ppm. Immediate action to reduce CO2 emissions is essential if this limit is not to be exceeded.... Global Climate Change: Adequacy of the National Action Plan : Hearing Before ... - Page 8 by United States. Congress. House. Committee on Foreign Affairs. Subcommittee on Economic Policy, Trade, and Environment - 1993 - 121 pages Full view -
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