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No, I read that when the leaves fall it released CO2 back to nature.( m" L" [7 N$ R7 C# R& I
I don't know its true or not.公仔箱論壇* G' m* a, M* c, @8 D8 c& p
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? |