. Currently, Americans rely heavily on the burning of fossil fuels as sources of energy. As a result of increased demand for energy sources, there is a continuing effort to find alternatives to burning fossil fuels. Discuss fossil fuels and alternative energy sources. In your answer be sure to: • state one disadvantage of burning fossil fuels for energy • identify one energy source that is an alternative to using fossil fuels • state one advantage of using this alternative energy source • state one disadvantage of using this alternative energy source