SweetLemon

交通空氣污染應該都幾嚴重呀- P! l" n/ `) U7 O
free2penny 發表於 2016-7-12 09:30 PM

5.39.217.77:88980 y& V1 F$ k+ X& g  d
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。, `. `6 @/ X+ t' c0 D, ?
SweetLemon 發表於 2016-7-14 10:34 AM
1 H" V. z4 N  z6 Q3 a6 d0 }not enough trees in the city

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+ a; h1 ~  [, i& u* E# {4 M4 V3 b& MNo, I read that when the leaves fall it released CO2 back to nature.$ e$ Z% w" I8 l( h" m$ o1 s
I don't know its true or not.