Question

The U.S. Clean Air Act Amendments of 1990 require the: development of automobiles with lower nitrogen oxide and hydrocarbon emissions. construction of more mass transit systems. elimination of diesel-fueled vehicles. reduction of automobile traffic. reduction of air pollutants in agricultural and rural areas.

Answer 1

Answer: Development of automobiles with lower nitrogen oxide and hydrocarbon emissions.

Step-by-step explanation:

The 1990 amendment to the Clean Air Act (1963) discussed environmental problems such as acid rain, toxic pollutants, and the ozone layer. Large reductions in gas emissions were required to avoid acid rain, the regulation of toxic elements was strengthened, and some chemicals that were prejudicial to the ozone layer depletion were banned.