Why was it important to establish the Clean Air Act? a. to reduce the need to study the effects of dirty air on human health
b. to determine ways to reduce the number of premature deaths per year
c. to create a regulation that makes any activities that pollute the air illegal
d. to make sure that no government activities polluted the local atmosphere

c. to create a regulation that makes any activities that pollute the air illegal...

Explanation:

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in 1783 cavendish was working with his hydrogen gas and found that when he burned it and condensed the vapor it was water. this was very significant since it disproved the greek theory of elements completely since water was not a simple substance but the product of two gases. it was lavoisier who hearing of the experiment gave cavendish's gas the name hydrogen ("water-producer") and added that hydrogen burned by combining with oxygen and that water was a hydrogen-oxygen combination.

explanation: