% v; w( r- b! I9 `2 {TVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。
1 }8 }3 u& s* zNo, I read that when the leaves fall it released CO2 back to nature.
! e r' e& l0 W& q# h5 Utvb now,tvbnow,bttvbI don't know its true or not.
) s( M. ~5 x+ }7 d: ESweetLemon 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? |