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dottiestwins dottiestwins
  • 03-06-2016
  • Biology
Answered

Tim does a study to determine whether or not cigarette smoking decreases speed in track runners

Verified Answer :

smarties15
smarties15 smarties15
  • 03-06-2016

Cigarette smoking decreases speed in track runner, due to the fact that their lungs have black spots. Making it harder for them to breathe. And harder to breathe causing slowing in speed.

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