1.less driving
2.to put cleaning filters on plants and factories
3.to smoke less because the smoke gets into the air
4.installing ventilation systems
5.do not burn harmful materials such as plastic or polyethylene
6.Plant as many trees (plants) as possible as they absorb carbon dioxide turning it into oxygen.
7.tell other people about these methods
8.Observe them yourself)
More info on Znanija.com - znanija.com/task/7972890#readmore