The harmful effects of tobacco use are mainly caused by nicotine,_______ , and carbon monoxide.
The harmful effects of tobacco use are mainly caused by nicotine, TAR , and carbon monoxide.
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Asked 5/23/2013 6:14:33 PM
Updated 11/23/2017 6:21:21 AM
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Masamune [11/23/2017 6:21:20 AM], Confirmed by
Masamune [11/23/2017 6:21:21 AM]
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