Why do factory have long chimneys??

1.	Why do factory have long chimneys??
Answer» Explanation: Long chimneys take the harmful smoke and gases PRODUCED in the factories high up in the AIR so as to REDUCE its harmful EFFECTS on the GROUND.

Answer»

Explanation:

Long chimneys take the harmful smoke and gases PRODUCED in the factories high up in the AIR so as to REDUCE its harmful EFFECTS on the GROUND.

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