Why was it important to establish the Clean Air Act? Select three options
emphasize cost-effective methods to protect the air
encourage people to study the effects of dirty air on human health
determine ways to reduce the number of premature deaths per year
create a regulation that makes any activities that pollute the air illegal
.make sure that no government activities polluted the local atmosphere.

Duchenne muscular dystrophy is a serious condition caused by a recessive allele of a gene on the human x chromosome. the patients have muscles that weaken over time because they have absent or decreased dystrophin, a muscle protein. they rarely live past their twenties. how likely is it for a woman to have this condition? a) women can never have this condition. b) one-fourth of the daughters of an affected man would have this condition. c) one-half of the daughters of an affected father and a carrier mother could have this condition. d) only if a woman is xxx could she have this condition.