HOMEWORK~!! ( ;-F

1. I think pollution come from the factory areas. For sure, all pollutions came form the factory areas. And there are many factories that do not affect pollution. But also there are many factories that do affect pollution illegally. They don\'t keep by the maximum regulations. 2. In Korea, almost air pollution come from China. So Korean people had to use a mask in every spring and fall. But now Korean people have to use a mask because of the Corona virus. And in Korea, air pollution is clean because of Corona virus. Because Chinese\'s factory stopped all activities by Corona virus. It is very an irony happen.