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tvb now,tvbnow,bttvb8 g4 H' k+ F% ^: F4 a0 T. O
free2penny 發表於 2016-7-12 09:30 PM

所以車有cabin air filter
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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。
1 H& ]! s$ x# D9 {* `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。SweetLemon 發表於 2016-7-14 10:34 AM

not enough trees in the city

Pedestrian_A

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' E2 ^8 u1 z0 b. ]9 G4 [0 wwww.tvboxnow.comNo, I read that when the leaves fall it released CO2 back to nature.
7 P% B% V' P" ]- B& @I don't know its true or not.! \% R8 ?/ ], k' T1 X5 E' z
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?