A change of one key component in the ecosystem under global warming would likely cause disastrous results in human societies dependent on the existing human ecosystem.

在全球变暖的大环境下生态环境某个关键部分的改变将可能引发建立在此基础上的人类社会灾难性的后果。

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According to the Rainforest Action Network, however, the injured ecosystem and human communities have not recovered and the spill continues to be the most damaging oil spill in history.

CNN: Conference to assess Exxon Valdez oil spill

Yvette Alberdingk Thijm is the Executive Director of WITNESS. She envisions a world where the millions of people turning to video today become human rights defenders and where collaboration between media, technology and human rights creates an ecosystem for social change.

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Well, if--as with a real highway--it destroys something irreplaceable, a vital ecosystem essential to human life.

FORBES: Medialand