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标签: ecosystem
以下是与 "ecosystem" 标签相关的所有文章。
- UNESCO designated Redwood National Park a world heritage site because of its rare ecosystem and cultural history.。
- （） is a situation where resource use has outpaced the sustainable capacity of the ecosystem.
- Once environmental damage（）, it takes long time for the ecosystem to recover.
- Once environmental damage（）, it takes long time for the ecosystem ( 生态系统 )to recover.
- Study shows that excessive use of _ may damage the ecosystem.