这些鸟类，比如小草原榛鸡，由于农民把草原变成玉米田以满足生物燃料的需求而受到危险。
These birds, such as the lesser prairie chicken, are threatened by farmers converting grasslands into corn fields to meet demand for biofuels.
世界自然基金会的报告指出很多破坏是由于烧林开垦耕地，然后用此以满足全球对大豆、牛肉和生物燃料的需求造成的。
The WWF report says much of the destruction results from burning of the forest to clear land, which is then used to meet the global demand for soybeans, beef and biofuel.
鲨鱼研究正在进行，但海洋生物学家远未满足于目前他们掌握的鲨鱼知识。
Despite the research progress, Marine biologists still know much less than they would like to about many shark species.
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