Write a script for a radio advertisement that tells the truth about cigarette smoking. Include in your ad how it affects the smoker, the air around the smoker, and others who breathe the air.

Abird flies by moving its wings up and down. which two systems are most directly responsible for the movement of a bird's wings? a. skeletal and muscular systems b. respiratory and muscular systems c. skeletal and digestive systems d. respiratory and digestive systems