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。www2.tvboxnow.com! O) X# g8 F: \' U# `% G
SweetLemon 發表於 2016-7-14 10:34 AM / N( w) o: z: c! G2 U/ N
not enough trees in the city www2.tvboxnow.com: F1 ^. x& w5 B, V. w
* G# b+ F$ }9 d/ H2 ]tvb now,tvbnow,bttvbNo, I read that when the leaves fall it released CO2 back to nature.3 x+ ^5 s& E7 x
I don't know its true or not. |