candycchandler candycchandler 17-11-2020 Chemistry contestada Each statement best explains why it is more difficult to use coal versus other alternate source of energy except: 1. Coal produces more pollutants in the air. 2. It is more difficult to mine for coal than other minerals. 3. Coals are not commonly used because it is more difficult to burn. 4. Coals are not commonly used because it produces more negative impact to the environment.