advantages: coal is plentiful and energy dense, technological demands for surface mining are small and costs are low; oil is convenient to transport/use, energy dense, burns cleaner than coal and is more CO2 efficient than coal; natural gas contains fewer impurities than coal and oil and releases 60% as much CO2 as coal does.
Which of the following conditions is most likely directly linked to tobacco use? A. influenza B. lung cancer C. pneumonia D. diabetes. Lung cancer is most likely directly linked to tobacco use.
Pulmonary consequences of regular tobacco smoking include (1) lung cancer; (2) chronic obstructive pulmonary disease (COPD), which consists of chronic bronchitis and emphysema; and (3) an increased incidence of respiratory tract infection due to smoking-related impairment in the lung's host defenses.