Which method is ineffective for stopping severe bleeding? removing a blood soaked gauze pad, then placing a clean one on the wound

applying pressure to a main artery leading to the wound

elevating the wound above the level of the heart

placing a clean cloth over the wound and press firmly with the hand

applying pressure to a main artery leading to the wound

Explanation:

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.