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, [8 ^, s9 n& F8 k0 R" v: y* Ltvb now,tvbnow,bttvbNo, I read that when the leaves fall it released CO2 back to nature.tvb now,tvbnow,bttvb9 i$ K4 u1 L4 p2 s( E
I don't know its true or not.
8 C- C5 X4 p5 Q u公仔箱論壇SweetLemon 發表於 2016-7-14 08:05 PM  A tree can absorb 13lb CO2 every year. A typical V8 car produce 220g CO2 per km. How many trees are needed? |