Fossil Fuels vs. Alternative Energy. What is Fossil Fuel?. Microorganisms are buried and decay Formed millions to hundreds of millions of years ago Supply is limited Burning produces carbon dioxide (CO 2 ) Contains other impurities that cause pollution. Examples of Fossil Fuels:.
Extreme emissions and pollution
Fossil Fuels considered to be less harmful than oil…. But still limited in supply.
Fossil Fuel Dependence