Answers

2015-09-27T19:20:09+05:30
Fuels are any materials that store potential energy in forms that can be practicably released and used for work or as heat energy. The concept originally applied solely to those materials storing energy in the form of chemical energy that could be released through combustion.
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2015-09-27T22:56:55+05:30
If we continued to use fossil fuels at the current rate then these will only last for next 60 years, think about this statement deeply ! then you will understand and u will conserve if you care about your children and grandchildren.
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