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.
1 Cancer is just one of many diseases caused by smoking. 2  Smoking causes most cases of chronic obstructive pulmonary disease (COPD) and is responsible for about 9 out of 10 COPD-related deaths. 3  Smokers are also at a significantly increased risk of heart disease and strokes. 4  Smoking during pregnancy is dangerous.