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为什么火可以燃烧？

火的形成是由于燃烧反应，即燃料与氧气在足够高的温度下发生氧化反应产生能量的过程。当燃料与氧气相遇时，燃料中的碳、氢等元素与氧气结合形成氧化产物，同时释放出热能和光能，从而形成火焰。

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