Environmental tobacco smoke causes the death of approximately 7,000 nonsmokers per year.

Gregory was caught smoking marijuana on his school’s campus during lunch. this is not the first time gregory has violated the school’s drug-free policy. his principal has decided to expel him, and he may face fines and time in a juvenile detention facility. gregory faced consequences when he was sent to juvenile detention after repeatedly violating the school’s drug-free policy.

How could you find out if that advice is based in scientific evidence?

Which of these contraceptive methods would be most beneficial for a female who wishes to avoid side effects or surgery?