Final answer:
Bronchogenic carcinoma and mesothelioma are commonly caused by exposure to carcinogens such as tobacco smoke and asbestos fibers.
Step-by-step explanation:
Bronchogenic carcinoma and mesothelioma are commonly caused by exposure to carcinogens, such as tobacco smoke, asbestos, and other chemical substances. Lung cancer, including bronchogenic carcinoma, is predominantly caused by exposure to tobacco smoke. Mesothelioma, on the other hand, is commonly caused by prolonged exposure to asbestos fibers.