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
4 q5 [# I4 V+ }' p& eTVBNOW 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 filterTVBNOW 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。9 ^) ~# ?4 t9 O8 f

1 _: w# M9 l# S) o; h; \! e5.39.217.76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 p- o! w4 |6 \SweetLemon 發表於 2016-7-14 10:34 AM

not enough trees in the city

Pedestrian_A

公仔箱論壇9 r/ Z8 t" Z/ L4 g* X; V
tvb now,tvbnow,bttvb4 A' j* h1 j, J: h; t1 E
No, I read that when the leaves fall it released CO2 back to nature.
' G6 T( Y) ]; c2 e1 w/ D% w5.39.217.76I don't know its true or not.
3 @; E/ W% q! r5.39.217.76SweetLemon 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?