Answer:
the energy required to break the bonds of reactant molecules
That is the best answer.
Answer:
Plants and other creatures utilize photosynthesis to convert light energy into chemical energy, which is then released to power the organism's metabolic processes through cellular respiration.
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Each upright domino is also full of potential energy. When the first domino falls, the force of gravity turns that potential energy into enough kinetic energy to topple a domino larger than itself.