Respuesta :
Answer:
Exercise and Smoking.
Explanation: Smoking damages the alveoli, decreases surface area available for gas exchange, and leads to heart disease and lung cancer, a disease that results from an overgrowth of lung tissue.
Answer:
Exercise and Smoking.
Explanation: Smoking damages the alveoli, decreases surface area available for gas exchange, and leads to heart disease and lung cancer, a disease that results from an overgrowth of lung tissue.