Pie Chart showing what the factors are for the cause of air pollution. I was not surprised by the percent (52%) that was contributed from the industry. Since industry (example from smokestacks) contribute to a large portion of what we breathe in daily, I was kind of surprised that it wasn’t a greater percent. I also thought that the commericial and residential heating had a very low percent of only 1. I would have thought that the percent would have been higher then agriculture.