NecessaryAsk9802 t1_j1x2fhj wrote
No you need to find something that is at higher potential energy to have an exothermic reaction. Only known natural source of a substance that has high potential energy is fossil fuels. All other sources are made by man where energy is put in to create these substance
capt_yellowbeard t1_j1x88qi wrote
Except, you know… wood.
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