Rubbish is one cause of air pollution problems. When there is so much garbage accumulation was up to spoilage odor. Therefore, to help each other, planting can help reduce the problem to one level.
Spam is a cause of air pollution. When there is so much garbage to pile up until it was smelly rotten throughout. Therefore, to plant a tree, it can help reduce the problem to a certain extent.
Garbage is one of the main causes of air pollution. When there is so much junk's accumulation and rotten smell around. So, planting trees can help reduce the problem to a certain extent.