Social Studies, 19.12.2019 03:31 younganastasia1

The u. s. clean air act amendments of 1990 require the:

a. development of automobiles with lower nitrogen oxide and hydrocarbon emissions.
b. construction of more mass transit systems.
c. elimination of diesel-fueled vehicles.
d. reduction of automobile traffic.
e. reduction of air pollutants in agricultural and rural areas.

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The u. s. clean air act amendments of 1990 require the:

a. development of automobiles...