GRE Reading Comprehension: JiJing 352-GRE阅读机经352篇 - _H5V7EC74F447OVMJ

According to the passage, increasing the food yield per unit of land can have which of the following effects? A. enabling more land to be used for development purposes B. compromising progress toward conservation goals C. helping protect comestible species from competition and predation D. helping reduce pressure on marine ecosystems E. helping restore the biodiversity of terrestrial ecosystems