Have the provisions of the clean air act affected the amount of air pollution in the united states explain

Yes pollution went down 57%. Outflows control programs that lessen air contamination from smokestacks and tailpipes give colossal air quality and medical advantages today, and the advantages will develop after some time as projects produce their full results. In 2020, the Clean Air Act Amendments will counteract more than 230,000 early fatalities.

the united states constitution is the supreme law of the united states. the constitution, originally comprising seven articles, delineates the national frame of government. its first three articles embody the doctrine of the separation of powers, whereby the federal government is divided into three branches: the legislative, consisting of the bicameral congress; the executive, consisting of the president; and the judicial, consisting of the supreme court and other federal courts. articles four, five and six embody concepts of federalism, describing the rights and responsibilities of state governments, the states in relationship to the federal government, and the shared process of constitutional amendment. article seven establishes the procedure subsequently used by the thirteen states to ratify it. it is regarded as the oldest written and codified national constitution in force.