6. to organize and extract waste air out of patikun before it's released to fresh air. Outside, such as by burning.7. help maintain planting trees, which helps the air filter was broken, as the weather is good.
6. The separation of waste and Out of the air before it is released into the air by burning an extra 7. Planting Tree care This helps filter waste into the air.
6. Organized and separated waste. Out of the air before it is released to the air outside, such as by burning 7. Planting trees and take care of trees. Which will help to filter air to air.