Question

why was smoke always rise up
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Answer 1

Answer:

Smoke always rises up because it contains hot air which is less dense then cold air so it rises up in the sky

Step-by-step explanation:

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Answer 2

Answer:

the smoke is formed of smoke and co2 which is formed after the burning of material. and as we know co2 is a lighter gas than air.So it rise up....Plz mark as brainlist