Question

what did the 1970 revision of the clean air act establish for the critical pollutants? no legal limits on pollution specific disposal locations removed all fines on polluters ambient air quality standards

Explanation:

The 1970 Clean Air Act revision established ambient air quality standards for critical pollutants. The other options are incorrect: "no legal limits on pollution" goes against the Act's purpose, "specific disposal locations" is not related to its main focus on air quality, and "removed all fines on polluters" is wrong as the Act aimed to regulate polluters, not remove penalties.

Answer:

(Assuming the last option, though partially visible, is "ambient air quality standards") The correct option (assuming the last one is "ambient air quality standards") as the 1970 Clean Air Act revision established ambient air quality standards for critical pollutants. If we consider the visible options, none of the first three are correct, and the likely correct one is the partially visible "ambient air quality standards" option. If we must choose from the visible (though the last is cut), but based on knowledge, the 1970 Clean Air Act set ambient air quality standards for pollutants. So if the last option is "ambient air quality standards", that's the answer.