Biofuel cycle

From Bytesmiths

<graphvizr> digraph G { node [URL="/wiki/\N", fontname="Baskerville SemiBold"] size="4,5" soil -> vegetation "solar energy"-> vegetation "carbon dioxide" -> vegetation water -> vegetation vegetation -> processing processing -> "carbon dioxide" [style=dotted] processing -> biofuel processing -> pollution [style=dotted] processing -> compost [style=dotted] biofuel -> combustion combustion -> "useful work" combustion -> pollution combustion -> "carbon dioxide" combustion -> water [constraint=false] compost -> soil [style=dotted]

fontname="Baskerville SemiBold Italic" label="Dotted lines represent 'might be' paths. For example,\nprocessing need not produce pollution, carbon dioxide,\nor compost, but will probably produce at least one of these." labelloc=b

processing [URL="/wiki/Biofuel_processing"] soil [style=filled, color=tan] "solar energy" [style=filled, color=yellow]; "useful work" [style=filled, color=gray]; water [style=filled, color=cyan] } </graphvizr>