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

1. true.2. true.3. true.4. false.5. true.the concept of darwin's theory of evolution involves the idea that there are limited resources in a given living environment and that the organisms which live within have variations in their genetic make up due to random mating. the ones with beneficial genetic variations can express certain traits which give them an upper hand in surviving and reproducing in the said environment compared to ones who may have a more disadvantageous variation in traits. over time, the organisms with an upper hand will survive and reproduce more frequently and pass on their beneficial genes while the others die. the result is evolution, where we observe (usually, but not always) eventually, phenotypic distinct changes.

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Your answer is going to be a. i know my biology