*Alcohol is over 100 times more lethal than marijuana (ratio of lethal dose to effective dose)<ref>[http://en.wikipedia.org/wiki/Tetrahydrocannabinol Wikipedia: Tetrahydrocannabinol]</ref>. | *Alcohol is over 100 times more lethal than marijuana (ratio of lethal dose to effective dose)<ref>[http://en.wikipedia.org/wiki/Tetrahydrocannabinol Wikipedia: Tetrahydrocannabinol]</ref>. |