1、the exhaustion of resources;
2、pollutions from industrial production transform many clean rivers into undrinkable water.
3、the convenience brought by cars, their harmful impact on the atmosphere.
4、garbage output, such as plastics and glass.
5、deforestation Global warming, current greenhouse effect remains out of control
6、human exploitation of natural resources
>>>全国各省各高校2017年考博报名时间及入口汇总
>>>全国各省各高校2017年考博考试时间汇总
>>>全国各省各高校2017年考博考试科目汇总
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