批评者还担心以工业目的（如塑料和乙醇产品）种植的玉米和其他作物会带来环境问题，更不用说对全球粮食价格的潜在影响了。
And critics have expressed concern about the environmental impact of corn and other crops grown for industrial purposes, such as plastics and ethanol production, not to mention the potential effects on global food prices.