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Hace 20 horas · Sustainability is a social goal for people to co-exist on Earth over a long time. Definitions of this term are disputed and have varied with literature, context, and time. [2] [1] Sustainability usually has three dimensions (or pillars): environmental, economic, and social. [1]
Hace 20 horas · Experimental French Régiolis Class train using biodiesel. Space-filling model of ethyl stearate, or stearic acid ethyl ester, an ethyl ester produced from soybean or canola oil and ethanol. Two general pathways for biodiesels from a fat. The process starts with hydrogenation of backbone double bonds.
