os.tvboxnow.com" e- b, D" p# ?) h
) b) y, j2 L5 Ros.tvboxnow.comNo, I read that when the leaves fall it released CO2 back to nature.0 q9 Y9 A' F& q; e2 K
I don't know its true or not.tvb now,tvbnow,bttvb- u _5 D9 F: Q; s) V5 C
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? |