But the agreement sets no timetable for stemming the increase in carbon dioxide emissions after 2012.
With India it accounted for 83% of the worldwide increase in carbon emissions in 2000-11.
The obstruction and resulting increase in carbon dioxide in their blood prevents deepening sleep.
The only sector that has shown a substantial increase in carbon emissions is petroleum or transport fuels.
If a new tree is planted for each one burned, there is no overall increase in carbon emissions.
In 2005, forecasters at the Energy Information Administration predicted an inexorable 37 percent increase in carbon dioxide emissions by 2025.
The APEC leaders hope that by 2030, for every 1percentt of growth in national output, the increase in carbon dioxide emissions will be held to 0.75percentt.
2015 saw the largest annual increase in carbon dioxide since records began – far higher than the Earth has experienced for hundreds of thousands of years.
Some energy experts have also said that Earth Hour could actually result in an increase in carbon emissions when lights are turned back on.
The State Department's most recent environmental assessment of Keystone concluded that the pipeline would not result in a major increase in carbon emissions.
Two-thirds of this demand would be met from fossil fuels, leading to a 25 per cent increase in carbon emissions, the group said.
