Pedestrian_A

真實加拿大一号公路

Pedestrian_A

交通空氣污染應該都幾嚴重呀
, S2 A1 I* G* j% B: u" ?TVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。free2penny 發表於 2016-7-12 09:30 PM

所以車有cabin air filter公仔箱論壇$ }  _6 O8 `3 l9 \7 a

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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。5.39.217.77:8898; ^$ \" G: O3 ?; K# l
SweetLemon 發表於 2016-7-14 10:34 AM

not enough trees in the city

Pedestrian_A

TVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。8 V4 o( L1 B5 }8 f

. V" F0 }* W0 ^+ P3 G6 X% d) W5.39.217.77:8898No, I read that when the leaves fall it released CO2 back to nature.5.39.217.77:8898! h$ N6 `( C4 @. t( a
I don't know its true or not.公仔箱論壇$ V3 U" o; y% H
SweetLemon 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?