Answers

2014-12-22T10:45:04+05:30
Fossil fuels are the fuels formed by natural process such anaerobic respiration of buried dead organisms.Chemically they are hydrocarbons found on the earth's crust.Fossil fuels are an example of non-renewable source of energy as they takes millions of years for their formation.They contain large amount of carbon.Some examples of fossil fuels are coal,petroleum etc.
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