Definition of fossil fuels. Fossil energy is that which comes from biomass from millions of years ago and has undergone major transformation processes. - ppt download
Fossil Fuels - GeeksforGeeks
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What Are Fossil Fuels? | Smithsonian Ocean
Mrs. Hartman Fossil Fuels. Most of the energy we use comes from fossil fuels Definition: a nonrenewable energy source formed from the remains of plants. - ppt download