A: If ride bicycle,causing saves fuel reduce emissions of carbon dioxide
B: That's a good idea.
A: If planting tree 1 tree,causing absorb carbon dioxide 1 ton.
B: And the tree will evolve oxygen in the daytime causing the fresh air.
A: If diluted computer desktop wallpaper is dark color,causing save more electricity.
B: great!
A: If reducing the use of plastic bag, causing reduces the accumulation of methane.
B: great! Thank you for your advice.