Cigarette Smoke Effects On Plants?

[Polly]

In article <6ar8cg$cdv$1 at netnews.upenn.edu>, ellen at spam.free.at.last wrote:

>In article <1998Jan29.132811.29204 at jarvis.cs.toronto.edu>,
>Beverly Erlebacher <bae at cs.toronto.edu> wrote:
>>In article <01bd2ccb$df4a1780$1f621e82 at oemcomputer>,
>>Ken Wolfe <wolfe at intellistar.net> wrote:
>>>When I was in high school my science project was to see the effects of cigs
>>>on plant growth.  The plants were kept in a terrarium type structure.  One
>>>terrarium had cig smoke blown in twice a day the other had just regular
>>>air.  Initially the plants receiving the tobacco smoke grew faster. 
>>>However, after a few weeks they stopped growing and the others grew larger
>>>and seemingly healthier.
>>>
>>>No hypothesis as to why just empirical evidence that concentrated smoke
>>>damaged the plants.
>>
>>Could be the tars coating the leaves and inhibiting gas exchange, and/or
>>coating the glass and reducing incoming light.
>
>And it could be the teacher getting upset that the experiment wasn't
>working out as intended... ;)

Also, cigarette smoke has a carbon monoxide in it, not a healthy substance.

Polly M. Law

Upstate NY/Z5
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