Perhaps we should give special attention to the conservation of such plant species since they lack key factors in their defenses against the environmental disruption caused by pesticide use.
也许我们应该特别注意保护这类植物，因为它们缺乏关键的因素来抵御由使用杀虫剂而造成的环境破坏。
2
In polluted urban areas, they also enhance production of ozone, a key ingredient of smog that is potentially toxic to animal and plant life.
在受污染的市区，他们还促进臭氧的产生，臭氧是对动物和植物生命有潜在毒性的烟雾的关键成分。
3
It might be the key to boosting oil yields from algae grown in ponds and to turning plant wastes into fuel, rather than converting valuable food into biofuel, as happens now.