题目内容
The tightly-linked living organisms on the Earth's surface work as a self-regulating system, which can always counteract the unfavorable influence and maintain the environment intact.
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The accelerating human transformation of the Earth's environment is not sustainable.
The ability to alter the living environment has enhanced man's conceit and left him blind to the law of the natural system work, their awe-inspiring interconnectedness, and our total reliance on natural services.
Among the six main problems that have pushed the environment to the edge, energy production and use has gained the least public attention.
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