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All the following conditions must be present for a fire to start except A. nitrogen to support the fire. B. a heat source (such as a spark). C. fuel (such as wood or gasoline). D. oxygen to support the fire.

User Kym NT
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2 Answers

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C cos with or without fuel you can start a fire
User Daniel Brotherston
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Its A because you oxygen.
User Majita
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