 | United States. Congress. House. Committee on Science and Technology - 1979 - 1192 pages
...understood, but uncertainty exists about many of the* and their relative importance. Nevertheless, we can say with- some confidence that the burning...have increased the amount of carbon dioxide in the atmosphere by about 15 per cent during the last century and it i* at present increasing by about 0.4... | |
 | Global 2000 Study (U.S.), Council on Environmental Quality (U.S.) - 1980 - 830 pages
...before the end of the next. 732 The Declaration of the 1979 World Climate Conference of the WMO states that the burning of fossil fuels, deforestation, and changes of land use have increased the CO2 content in the atmosphere by about 15 per cent during the last century and are continuing to increase... | |
 | Irving M. Mintzer, J. Amber Leonard - 1994 - 412 pages
...World Meteorological Organization (WMO) in Geneva in 1979, cautiously concluded that: It can be said with some confidence that the burning of fossil fuels,...have increased the amount of carbon dioxide in the atmosphere by about 15 per cent during the last century and that it is at present increasing by about... | |
 | Global 2000 Study (U.S.) - 1980 - 824 pages
...before the end of the next. 732 The Declaration of the 1979 World Climate Conference of the WMO states that the burning of fossil fuels, deforestation, and changes of land use have increased the CO2 content in the atmosphere by about 15 per cent during the last century and are continuing to increase... | |
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Nevertheless, we can say with some confidence that the burning of fossil fuels, deforestation, and changes of land use have increased the amount of carbon dioxide in the atmosphere by about 15 per cent during the last century and it is at present increasing... 