题目内容
Free riders have incentives to preserve their rights.
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In some cases, the efficient level of emissions can be reached, regardless of which party has the property rights.
The efficient level of emissions can never be reached, regardless (无论) of which party has the property rights.
ForProperty Rights to be effective there must be market like conditions.
In the production of clean energy an improvemnent in technology will produce more clean energy at a lower cost.
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