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Non-renewable or Conventional Sources of Energy

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Definition and example of fossil fuels - definition

Natural fuel such as coal or gas, formed in the geological past from the remains of living organisms.

Properties of fossil fuels - definition

Fossil fuels are combustible, burning in the presence of oxygen and forming water vapor, carbon dioxide, ash and other byproducts.

Fossil Fuels - example

Fossil fuels are fuels formed by anaerobic decomposition of buried dead organisms over millions of years. A lot of fuels fall under this category like coal, petroleum and natural gas. They are presently the largest source of energy used on earth. They are exhaustible(limited in amount) and cause air pollution.