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The amount of cannabis in a spliff can range anywhere from 0.25 to 0.5 grams, though some enthusiasts go bigger
50 ppm: At this level, prolonged exposure can cause symptoms such as headaches, fatigue, and impaired judgment
The researchers also found that the earlier women started to smoke, the higher their risk of chronically painful periods
Anatomy of a Cigarette | "Safer" Cigarettes: A History | The Dope on Nicotine | On Fire Resources | Teacher's Guide | Transcript | Site Map | Search for a Safe Cigarette Home Search | Site Map | Previously Featured | Schedule | Feedback | Teachers | Shop Join Us/E-Mail | About NOVA | Editor's Picks | Watch NOVAs online | To print PBS Online | NOVA Online | WGBH | Updated October 2001
If you swallow or consume something with benzene in it, it can cause can stomach irritation, nausea, vomiting, and diarrhea
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