SweetLemon

交通空氣污染應該都幾嚴重呀
7 I+ x4 G2 b" F% x! p. I/ pfree2penny 發表於 2016-7-12 09:30 PM

( l: V8 g$ h7 x7 F3 b% Y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。

SweetLemon

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。
3 E- u8 M5 f+ N+ m' V4 \公仔箱論壇SweetLemon 發表於 2016-7-14 10:34 AM 公仔箱論壇9 a1 n7 ]2 B! u8 Z' M/ ?
not enough trees in the city

: @) Y+ W. K# i/ C* I! ?# ^
1 Z# V! v- _1 G# J" {No, I read that when the leaves fall it released CO2 back to nature.
/ _# A) i3 Z( U* eI don't know its true or not.