砍伐树木森林被毁
过度放牧破坏了草场
排污污染了河流
排放
温室气体捕猎使大量物种灭绝
破坏臭氧层
大水漫灌使土壤盐碱化.
使用
生化武器污染了环境.
制造基因生物威胁到
生态平衡抽取地下水使地表下降.
Tree felling forests destroyed
Overgrazingdestroyed thepasture
Sewagepollutionofrivers
Greenhouse gas emissions
Huntinga large number ofspecies extinction
Damage the ozone layer
Flood irrigation,soilsalinization.
Useof chemical and biological weaponspollutes the environment.
Manufacture ofgenetically modified organismsisathreattotheecological balance
Extraction of groundwatertothe surfacedown.