Related by context. Frequent words. (Click for all words.) 67 biofuels 65 biofuel 64 bio fuels 60 crops 59 genetically modified crops 59 bioenergy 57 biotech crops 56 jatropha 56 cropland 55 switchgrass 55 genetically engineered crops 55 Biofuel 55 crop yields 54 arable land 54 ethanol 53 biomass 52 renewable fuels 51 tropical forests 51 cellulosic ethanol 51 GMOs 51 bioethanol 50 grasslands 50 native grasses 50 grasses 50 herbicides 50 genetically modified 50 Jatropha 50 fossil fuels 49 organic farming 49 alternative fuels 49 soil fertility 49 grassland 49 genetically modified organisms 49 feedstocks 49 Bt cotton 48 genetically modified foods 48 sugarcane 48 carbon sequestration 48 vegetation 47 deforestation 47 palm oil 47 biodiesel 47 sugar beets 47 cellulosic 46 corn 46 Biofuels 46 deforested 46 chemical fertilizers 46 sugar cane 46 rapeseed 46 sorghum 46 biodiversity 46 fossil fuel 46 forests 46 bio diesel 46 maize 45 alfalfa 45 forage 45 wetlands 45 glyphosate 45 farmland 45 soya 45 drought resistant 45 corn crop 45 genetically modified GM 45 wildlife habitat 45 REDD 45 nitrogen fertilizer 45 environmentally sensitive 45 Amazon rainforest 44 GMO 44 greenhouse gasses 44 Deforestation 44 fertilizers 44 staple foods 44 sugar beet 44 genetically engineered 44 rainforests 44 feedstock 44 agricultural 44 Crops 44 transgenic 44 tropical forest 43 pesticides 43 renewable energy 43 cleaner burning 43 plantations 43 industrial hemp 43 soybeans 43 pollinators 43 wildlife habitats 43 Biomass 43 rangeland 43 cleaner fuels 43 bioplastics 43 stevia 42 organic foods 42 Bioenergy 42 forages 42 forestland 42 renewable