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The burning flame on a candle needs three things to continue burning:

1) fuel, which it gets from the wick

2) heat, which comes from lighting the candle

3) oxygen

Without any one or more of these three things, the candle will no longer continue to burn. In the case where a candle is covered with a glass, the candle quickly uses up the oxygen inside the glass. once all of the oxygen is gone, the flame will burn out.

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15y ago

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