Question

Fireman usually crawl while entering a building where a fire has broken out. Give reason.​

Answer 1

Answer:

A the smoke and heat is warm, it rises up and the lower gases like oxygen in the atmosphere takes the place left by the smoke. The lower you can get, the cooler it is and clearer you can see. Thus, a fireman crawls on the floor of a room that is filled with smoke

Explanation:

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