The clean water act a. set maximum contaminant levels for drinking water b. required industries to reduce to reduce or eliminate point source pollution in surface waters c. established national ambient air quality standards d required that pollution control devices be installed on cars and trucks and at factories

The answer is:

required industries to reduce or eliminate point source pollution in surface waters

la segunda guerra mundial comenzó el 1 de septiembre de 1939 y terminó el 2 de septiembre de 1945. ¡espero que esto ayude!

on april 6, 1917, the u.s. joined its allies--britain, france, and russia--to fight in world war i. under the command of major general john j. pershing, more than 2 million u.s. soldiers fought on battlefields in france.