1 p o' M3 `0 Y, T" i }3 ztvb now,tvbnow,bttvbtvboxnow.com4 K+ `7 t* Z8 X9 W- a2 X& Q
No, I read that when the leaves fall it released CO2 back to nature.tvboxnow.com P( X( T6 Y4 W8 z
I don't know its true or not.
( Q+ r0 U' i2 i2 s6 X5 ~tvb 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? |