harmful effects of medication, alcohol, drugs, and addiction

"HARMFUL EFFECTS OF MEDICATION, ALCOHOL, DRUGS, AND ADDICTION. 
CIGARETTES -. More than 4,000 chemicals; At least 43 known carcinogens ..."

Harmful Microbe Cartoons (MS Powerpoint) - e-Bug

"Can you see. the difference between. Amy's clean hands. and. Harry's dirty 
hands? What is causing. Amy's. sore throat? Can you guess. why Harry is so."