4 j% d/ d- x( g* b+ Q6 h% Owww2.tvboxnow.com
& M7 R, A- P* v4 G1 e4 d3 Etvb now,tvbnow,bttvbNo, I read that when the leaves fall it released CO2 back to nature.
1 h6 M+ d! R; ^! S1 W: q6 Awww2.tvboxnow.comI don't know its true or not.
4 z4 b% v; ~ s- jtvb 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? |