What is the source of energy permanence ?

What is the source of energy permanence ?
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Answer :

The principle of permanence of energy is that there is no creation or destruction of energy, energy can only vary from one form to another. The total amount of energy in the universe is fixed and unchanging. It is possible to convert one type of energy into any other type of energy. When energy changes from one form to another, there is no loss of energy. One object loses as much energy as another gains. In fact, we cannot create or destroy any new energy.
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