which type of air pollution was caused by factories during the industrial revolution?\no smoke from burning…

which type of air pollution was caused by factories during the industrial revolution?\no smoke from burning coal\no soot from forest fires\no smog from high pollen levels\no smoke from vehicle exhaust
Answer
Brief Explanations:
During the Industrial Revolution, factories mainly used coal as fuel. Burning coal produced smoke. Forest - fires are not related to factory activities during the Industrial Revolution. High pollen levels are a natural source of smog not related to factories then. Vehicle exhaust became a significant issue later with the rise of automobiles, not a main factory - related air pollution during the Industrial Revolution.
Answer:
smoke from burning coal