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8 ]- Q; c6 }0 ytvb now,tvbnow,bttvbNo, I read that when the leaves fall it released CO2 back to nature.5.39.217.77% \7 K8 G( g8 g; N0 I1 f
I don't know its true or not.
" d8 t0 n% `# f/ {8 J: _ Etvb now,tvbnow,bttvbSweetLemon 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? |