But because the carbon in biofuels is pulled directly from
the atmosphere via photosynthesis, it would seem that burning ethanol does not, in and of itself, represent a net source of new CO2 to the atmosphere.
Not exact matches
«Biomass pulls CO2 from the air
via photosynthesis,» says Noah Deich, executive director of The Center for Carbon Removal, «and the capture part prevents that CO2 from escaping back into the
atmosphere.»
For example, carbon dioxide, the dominant form of carbon in the
atmosphere and associated with climate change, is used by plants to generate energy
via photosynthesis.
But also, it absorbs CO2 from the
atmosphere,
via its leaves, and by the process of
photosynthesis converts that to organic (carbon based) compounds.
Radiocarbon is sequestered by trees
via photosynthesis, moved to the ground, and finally released again into the
atmosphere.
Carbon stored in the
atmosphere, surface ocean, biomass and soils, for example, is cycled relatively quickly
via processes such as
photosynthesis, respiration, decomposition, and air - sea gas exchange.
Because a large flux of CO2 is constantly being assimilated into the world as forests
via photosynthesis, cutting off its return pathway to the
atmosphere forms an effective carbon sink....
And if tectonic subduction zones did not continually recycle some of that
via andesic volcanoes back into the
atmosphere for
photosynthesis, you and everything else on Earth would already be long dead of starvation.
The CO2 that is emitted
via Respiration and is not reabsorbed
via Photosynthesis exits the Cell and the greenhouse and moves into the
atmosphere.