公仔箱論壇! Y& j, [0 m; |; q1 g. O& A5 q
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No, I read that when the leaves fall it released CO2 back to nature.tvb now,tvbnow,bttvb9 U+ x) ^8 [+ c+ M z0 r3 S% j" j5 T
I don't know its true or not.tvb now,tvbnow,bttvb( q- ~( c0 l2 ~
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? |