The issue of global warming is receiving considerable attention these days. Write an essay (no less than 1 page, single-line space, times new roman font, 11 point) with at least three references on the subject of global warming. Explain what is meant by the term global warming and discuss objectively the scientific evidence that is cited as the basis for the argument that global warming is occurring. Determine the respective contributions to the electric power provided to customers by the electric utility serving your locale attributable to coal, natural gas, oil, biomass, nuclear power, wind power and solar power, and summarize your findings in a pie chart. For each type of contribution to the electric power, evaluate its effect on global warming.