题目内容

资源利用的外部性(名词解释)

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可持续发展模式是通过提高再生资源的再生速率，缓解资源稀缺程度。()
参考答案：错误

People With underworld background donate to political parties, bribe government officials,

污染物排放量越大，边际治理成本也越大。()
参考答案：错误

Write about the following topic:
Many schools have severe problems with student behaviour.
What are the causes of this problem and what can be done to solve them？
Give reasons for your answer and include any relevant examples from your own knowledge or experience.
Write at least 250 words.