| http://www.w3.org/ns/prov#value | - Actually it kind of has to.The only reason our CO emissions are a problem is that we are digging up carbon that has been buried for years, and releasing it into the air.Any form of renewable gas (ethonal, weird bacteria, etc) have to get the carbon from SOMEWHERE. In the case of plant based sources it gets it from the air the plants breath and store in the sugar.
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