Look at geographic elements, such as terrain levels of carbon dioxide, amounts of water, climate or temperature.
Broadly speaking, our climate change mitigation scenarios are strictly illustrative in nature, in other words, they serve to convey the types, magnitude and time frame of mitigation measures needed to reduce atmospheric carbon dioxide amounts.
The recorded 5.29 million metric tons of carbon dioxide amounted to the largest decline since 1994, continuing a downward trend that started in 2007.
Even though DMFCs produce carbon dioxide, the amount is small enough for the cells to count as a much greener technology than batteries.
Nor is it frozen at the poles (these are made largely of solid carbon dioxide; the amount of water-ice they contain could not possibly have carved the valleys that are visible).
The Native Americans planted 250 acres of ponderosa pine, and Sustainable Forestry Management got rights to emit 48,000 tons of carbon dioxide, the amount that the trees should absorb from the atmosphere over the next 80 years as they turn into timber.
The team found that, as a general rule, big creatures, whose tissues would have produced large amounts of carbon dioxide, had prodigious amounts of dermal bone.
KiOR says that its fuel will release one-sixth the amount of carbon dioxide as an equivalent amount of petroleum fuel.
The volcanic eruption has released carbon dioxide, but the amount is dwarfed by the savings.
Although volcanoes exhale much water vapour (H2O) and carbon dioxide (CO2), the amount of free oxygen (O2) emitted is very small.
