1-ppl should stop throwing their rubbish outside 2-in order to avoid pollution u need to buy enviromentally friendly goods 3-ppl should stop building factories 4-stop smoking 5- stop a process of deforestation 6-don't set fire to the forest 7-don't leave unnecessary things outside 8-you need to plant a lot of trees all over the world to avoid the air pollution 9-create some departments that'd control a process of cleaning in every region of our country