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.
More than 8 out of 10 lung cancers are caused by smoking. Tobacco smoke contains carcinogens-substances that cause cancer. These substances damage lung cells, and over time the damaged cells can turn into lung cancer. The more you smoke and the longer you have smoked, the higher your chances of getting lung cancer.