Which form of birth control is 100 percent effective at preventing pregnancy? a. male condom b. female condom c. birth control pills d. none of the above

what are the choices?

exposure to hazardous carcinogens and toxic substances can cause breathing problems, such as copd and various types of cancer. it also increases the risk of heart attacks and strokes and has serious (but no less unattractive) side effects, such as aging, yellow teeth, a terrible smell and damage to the vocal cords.