Biofuel is a renewable energy source, unlike its counterpart fossil fuel. Being from plants makes biofuel unlimited in supply. The burning of any type of fuel is bound to have some sort of environmental impact. Biofuels are very similar to hydrocarbons and have some of the same emissions problems that standard fossil fuels have. However, the biofuel process usually has a cleaner method of processing and distribution. Also, biofuels are much safer than fossil fuels, and less likely to kill organisms, or contaminate water and soil if spilled in large quantity.
Biofuels are less toxic because they are biodegradable biological molecules. Bacteria and other organisms that live naturally in the soil and water are able to use biofuel molecules as energy sources and break them down into harmless byproducts. This means that even though concentrated biofuel spills can kill things like plants and smaller animals, they will not persist in the environment and cause damage or make an area uninhabitable for long periods of time.Another great perk of biofuel, if processed and produced properly, is an extreme reduction in greenhouse gas emissions, primarily carbon dioxide. This happens because plants absorb excess carbon dioxide from the air to grow and produce food, so the increase of plants growing food, the decrease of carbon dioxide, lessening global warming.
Biofuels, when grown from plants, can thus offset their carbon dioxide emissions because they take up the gas during growth that is produced when the fuel is burned, potentially cancelling out the excess carbon dioxide. All of the mentioned reasons, plus more, has led to the encouragement of the continued development of biofuels as substitutes for petroleum, both to reduce dependence on foreign oil and to reduce greenhouse gas emissions. (Liska & Perrin, 2010).