Biology, 03.08.2019 22:50 ueuwuwj

If a researcher finds that there is a correlation between secondhand smoke and children's asthma, he knows for sure that a. secondhand smoke does not cause children's asthma b. children exposed to smoke in utero often get asthma c. asthma and secondhand smoke have some connection d. secondhand smoke causes children's asthma

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If a researcher finds that there is a correlation between secondhand smoke and children's asthma, he...