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 CO , emissions is essential if this limit is not to be exceeded.... Global Climate Change: Adequacy of the National Action Plan : Hearing Before ... - Page 45 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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