知识问答
最佳答案：It is the overuse of the plastic bags that contributes to the severe enviornment
最佳答案：Because we used new resources, our environment got protected from pollution.
最佳答案：Air pollution is the concentration of pollutants in the atmosphere of harmful de
最佳答案：Abstract:Since long-time,The point source pollution continuously receives from a
最佳答案：城市的空气污染造成空气污浊,人们的发病率上升；水污染使水环境质量恶化,饮用水源的质量普遍下降,威胁人的身体健康,过度释放二氧化碳使全球变暖.Air pollut
最佳答案：In the room and the chemical widespread use cause which as a result ofmodern arc
最佳答案：The pollution caused by the CFCs and other stratospheric由氯氟烃等造成的平流层污染can cause t
最佳答案：A large number of trees were cut ,excessive use of fossil fuels,to make our livi
最佳答案：Anywho has never been to the Great Wall is not a true man.His report to be done
最佳答案：Ocean pollution means People threw watses or dirty things to the ocean,which mak
最佳答案：1.Save energy and resources effectively .2. Promote the concept of environmental
最佳答案：Especially in recent years,with the effort of Chongqingers the environment of Ch
最佳答案：1,Mr Li is too busy,won't be able to see the game.2,how many of you have been to
最佳答案：With New Year on the way, many classmates are starting to exchange greeting card
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