Coal, Oil and Petrol are called "fossil fuels" because they have been formed from the fossilized remains of prehistoric plants and animals, they provided around 66% of the world's electrical power, and 95% of the world's total energy demands (including heating, transport, electricity generation and other uses) to make it the most used non renewable resource in the world. These fossil fuels have to be mine from certain areas and the mining process is both dangerous and expensive.
Providing a new form of fuel that does not damage the environment, for example bio-fuels, this is a form of fuel that does not produce a very large amount of harmful substances and is more renewable or more available than fossil fuels. Other sources include using natural sources like: wind power, wave power and solar energy to generate energy to sustain human existence by reducing pollution.
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