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
2 o9 ~- x3 \; CTVBNOW 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
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" a" S/ Q: M' a2 e6 O6 S3 p5.39.217.77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。
- }  Q, i/ o$ `' c公仔箱論壇SweetLemon 發表於 2016-7-14 10:34 AM

not enough trees in the city

Pedestrian_A

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: H- R5 _$ b4 M. b& @/ Q3 M% w+ N' b( Dtvb now,tvbnow,bttvbNo, I read that when the leaves fall it released CO2 back to nature.
* r, _7 M+ ~6 f% E) m公仔箱論壇I don't know its true or not.
( _/ D" j1 R# o/ ^1 GSweetLemon 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?