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Title: Although only ___ percent of smokers in the United States develop COPD, _____ percent of all COPD ca Post by: Merra on Jan 15, 2015 Although only ___ percent of smokers in the United States develop COPD, _____ percent of all COPD cases are the result of smoking.
A. 10; 50 to 60 B. 10; 80 to 90 C. 20; 80 to 90 D. 20; 20 to 30 Title: Re: Although only ___ percent of smokers in the United States develop COPD, _____ percent of all COP Post by: Naya on Jan 19, 2015 Content hidden
Title: Re: Although only ___ percent of smokers in the United States develop COPD, _____ percent of all COPD ca Post by: Merra on Jan 20, 2015 I understand it now :D
TY Title: Re: Although only ___ percent of smokers in the United States develop COPD, _____ percent of all COPD ca Post by: Naya on Jan 20, 2015 Give me thumbs up :D
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