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