Biodiesel from beef burns cleaner than plant biodiesel, though it may not be scalable outside the beef belt. 虽然这一方法在牛产量不大的区域并不可行,但来自牛肉的生物柴油燃烧起来比植物性生物柴油更加干净。
South American plant having green to purple or red branches with green to purple ornamental foliage and spikes of insignificant woolly flowers with dry membranous bracts