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FIGURE 14.1 Global population trends from 1860 to 2000 (billions, left axis) and reactive nitrogen (Nr) creation (teragrams nitrogen (Tg N) per year, right axis). "Haber-Bosch" represents Nr creation through the Haber-Bosch process, including production of ammonia for nonfertilizer purposes. "C-BNF" (cultivation-induced biological nitrogen fixation) represents Nr creation from cultivation of legumes, rice, and sugarcane. "Fossil fuel" represents Nr created from fossil fuel combustion. "Total Nr" represents the sum created by these three processes. Reproduced from Galloway et al. (2003); copyright American Institute of Biological Sciences.

Guide to Alternative Fuels

Guide to Alternative Fuels

Your Alternative Fuel Solution for Saving Money, Reducing Oil Dependency, and Helping the Planet. Ethanol is an alternative to gasoline. The use of ethanol has been demonstrated to reduce greenhouse emissions slightly as compared to gasoline. Through this ebook, you are going to learn what you will need to know why choosing an alternative fuel may benefit you and your future.

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