Discussion
Energy is released from Fossil Fuels when they are :
Answer: C
Energy is released when fossil fuels are burned.
Coal, oil and natural gas store chemical energy derived from ancient plants and animals. Burning (combustion) combines their carbon and hydrogen with oxygen, releasing that energy as heat, with carbon dioxide and water as products.
Pumping only moves the fuel, cooling removes heat, and pressurising compresses it. None of these releases the stored chemical energy.
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