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公仔箱論壇: R* `' n2 Z! K* l" Z: f
free2penny 發表於 2016-7-12 09:30 PM

所以車有cabin air filter5.39.217.77:8898) M! @3 f# @+ `# R  t" n

8 E0 X5 k6 X2 `$ |7 C6 @$ U* [- FTVBNOW 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。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。
9 p7 ^- x- p# @5.39.217.77:8898SweetLemon 發表於 2016-7-14 10:34 AM

not enough trees in the city

Pedestrian_A

  G% x) e7 b" c: t4 O0 t: k, wtvb now,tvbnow,bttvb5.39.217.77:8898- v* }+ g* p# n; j1 J% j
No, I read that when the leaves fall it released CO2 back to nature.7 z, Y' t# I5 r
I don't know its true or not.
- N2 J! l- l) Z3 {5 C- S2 P: q9 xTVBNOW 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 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?