题目内容
There is concern that racial minorities and poor people are exposed to more damages from pollution.
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There is concern that racial minorities and poor people are exposed to less damages from pollution.
Hazardous waste sites are disproportionately located in areas where there are large populations of poor people.
Hazardous waste sites are disproportionately located in areas where there are large populations of rich people.
Technological change shifts the marginal abatement cost function upward.
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