加拿大很多樹但也期望森林吸收掉人們無節制排放的二氧化碳。
( h; g9 X+ |6 s/ y5 _tvb now,tvbnow,bttvbSweetLemon 發表於 2016-7-14 10:34 AM www1.tvboxnow.com6 h$ [# Q, N5 l, I
not enough trees in the city tvb now,tvbnow,bttvb4 y, {$ `' @+ J. t
5 z( M( K+ ?) |% ^6 b6 iNo, I read that when the leaves fall it released CO2 back to nature.
3 Q* ~ a1 c1 p: L9 A8 k/ B/ e' |I don't know its true or not. |