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Biology 8 Online
OpenStudy (anonymous):

what causes asthma?

OpenStudy (anonymous):

lots of things cause asthma mold, smokeing, some are born with it, i was born with it due to that fact i was one and a half months early. allergies have alot to do with it to.

OpenStudy (anonymous):

http://www.medicalnewstoday.com/info/asthma/what-causes-asthma.php read this it should help u with ur question.

OpenStudy (anonymous):

thanks!!

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