(14 points) What nationwide step that greatly reduced dangerous automobile emissions was mandated by the U.S. Clean Air Act? a switch from gasoline-powered cars to hybrid gasoline-electric cars a raising

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asked Dec 26, 2020 127k views

4 votes

(14 points) What nationwide step that greatly reduced dangerous automobile emissions was mandated by the U.S. Clean Air Act?

a switch from gasoline-powered cars to hybrid gasoline-electric cars

a raising of the heights of factory chimneys that polluted

the gradual elimination of leaded gasoline as an auto fuel

a change from American cars to cars from other auto-producing nations