Why was it important to establish the Clean Air Act? Select three options.

A. emphasize cost-effective methods to protect the air
B. encourage people to study the effects of dirty air on human health
C. determine ways to reduce the number of premature deaths per year
D. create a regulation that makes any activities that pollute the air illegal
E. make sure that no government activities polluted the local atmosphere

3.09 lab: reaction of metals 1 which combinations of substances resulted in a chemical change? for each metal that participated in a chemical change, write the type of metal it is, based on your examination of the periodic table. were there any metallic compounds that did not react with either the acid or the base? write the type of metal, based on your examination of the periodic table. make a general statement about the reactivity of the metals in this experiment.