Why is the removal of combustible material not always possible when extinguishing fire?? plz answer fast I will give brainliest answer

Explanation:

This is because if there is a fire on the building where every object is combustible material then it is not possible to extinguish the fire by only removing the combustible material as you cannot remove the combustible material out of building the only way of doing that is using of carbon dioxide extinguisher or water.

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answer is: c. the experiment shows that the red substance experienced a chemical change.

this is chemical change (chemical reaction), because two new substances are formed (metalig liquid and gas), the atoms are rearranged and the reaction is followed by an energy change.

this is example of chemical decomposition.

chemical decomposition (analysis) is the separation of a single chemical compound into its two or more elemental parts or to simpler compounds.  

chemical decomposition is opposite of chemical synthesis.

the answer is minerals.