Question

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Answer 1

Answer:

1.The presence of a combustible substance.

2.The presence of oxygen.

Answer 2

Answer:

Three things are required in proper combination before ignition and combustion can take place---Heat, Oxygen and Fuel.

There must be Fuel to burn.

There must be Air to supply oxygen.

There must be Heat (ignition temperature) to start and continue the combustion process.

Explanation:

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