Ince the implementation of the clean air act, the concentrations of all major air pollutants have decreased. true or false?

True all the way! Clean Air Act. The Clean Air Act was major legislation passed to control air pollution in the United States. The Act was passed in 1963, but important and major amendments were added to the original Act in 1970 and 1990. ... The 1970 Clean Air Act forms the basis of the U.S. air pollution control policy. I'm happy it's turning our world into a better place! :)

the answer would be a." don't hit a home run when the game is tied"