Assertion: hydrocarbon's carbon | /r/HasProperty | sequestered by the energy crop's root system
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text: However, the simple proposal that biofuel is carbon-neutral almost by definition has been superseded by the more nuanced proposal that for a particular biofuel project to be carbon neutral, the total carbon sequestered by the energy crop's root system must compensate for all the above-ground emissions (related to this particular biofuel project).