At some point, rising income levels lead to demands for greater environmental protection and, as a result, pollution levels fall. A study by Grossman and Krueger found this generally occurred before per capita income levels reached

At some point, rising income levels lead to demands for greater environmental protection and, as a result, pollution levels fall. A study by Grossman and Krueger found this generally occurred before per capita income levels reached



Answer: $8,000.


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