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.
There is some evidence that smoking could cause breast cancer [11-15]. After lung cancer, the upper aerodigestive tract cancers (mouth, upper throat, voice box and gullet) have the highest proportions of cancer cases caused by smoking â population attributable fractions, or PAFs, of more than 6 in 10 [4].obacco is the single biggest cause of cancer. Experts agree that tobacco is the single biggest avoidable cause of cancer in the world [1, 2]. Smoking causes over a quarter (28 per cent) of cancer deaths in the UK and nearly one in five cancer cases [3, 4].