Exposure to tobacco smoke immobilizes and destroys cilia. How might this effect explain why smokers have an increased incidence of coughing and respiratory infections?

If you see someone who is injured at a workplace, the first thing you should do is a. call 9-1-1 or your local emergency number b. begin to administer first aid c. check the scene for danger d. try to discover what is wrong with the person select the best answer from the choices provided a b c d