...conclusion that the scientists of the world working on assessing the problem are absolutely certain that emissions resulting from human activities are...substantially increasing the atmospheric concentrations of greenhouse gases. These increases will enhance the greenhouse effect, resulting on average in an additional...

...there is a natural greenhouse effect which already keeps the Earth wanner than it would otherwise be. o emissions resulting from human activities are substantially...of the greenhouse gases: carbon dioxide, methane, the chlorofluorocarbons and nitrous oxide. These increases will enhance the greenhouse effect, resulting...

...please? Mr. SIKORSKI. Sure. They say, "We are certain of the following:" — and this is the second — "Emissions resulting from human activities are substantially...atmospheric concentrations of the greenhouse gases" — and then they name them — "carbon dioxide, methane, chlorofluorocarbons, and nitrous oxide. These...

...uncertainties surrounding climate change. The key findings are: — In regard to science, the report concludes that emissions resulting from human activities are...substantially increasing the atmospheric concentrations of greenhouse gases, and that these increases will enhance the greenhouse effect, resulting on average...

...uncertainties surrounding climate change . The key findings are: o In regard to science, the report concludes that emissions resulting from human activities are...substantially increasing the atmospheric concentrations of greenhouse gases, and that these increases will enhance the greenhouse effect, resulting on average...

...Panel on Climate Change (involving scientists from all over the world) repeated Its earlier findings that, 'emissions resulting from human activities are...gases: carbon dioxide, methane, chlorofluorocarbons, and nitrous oxide,' and The evidence from the modelling studies, from observations and sensitivity...

...of the major conclusions of the first IPCC Scientific Assessment, in particular the following: • emissions resulting from human activities are substantially...gases: carbon dioxide, methane, chlorofluorocarbons, and nitrous oxide; • the evidence from the modelling studies, from observations and the sensitivity...

...of the major conclusions of the first IPCC Scientific Assessment, in particular the following: • emissions resulting from human activities are substantially...gases: carbon dioxide, methane, chlorofluorocarbons, and nitrous oxide; • the evidence from the modelling studies, from observations and the sensitivity...

...alteration of the major conclusions of the first IPCC Scientific Assessment, in particular the following: Emissions resulting from human activities are substantially...gases: carbon dioxide, methane, chlorofluorocarbons, and nitrous oxide; The evidence from the modelling studies, from observations and the sensitivity analyses...

...maintains the average temperature of the earth's atmosphere (NRC, 1983). Studies have also established that emissions resulting from human activities are...substantially increasing the atmospheric concentrations of greenhouse gases above natural background levels (Keeling et al., 1989) (fig. 1). A recent United Nations...